{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# IPython: an environment for interactive computing"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Based on [Introduction to IPYthon Notebook by Fernando Perez](http://nbviewer.ipython.org/url/raw.github.com/profjsb/python-bootcamp/master/Lectures/04_IPythonNotebookIntroduction/IPython%20-%20beyond%20plain%20Python.ipynb), minor modifications Hans Fangohr, Sep 2013. Update to Python 3, September 2016.\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "## What is IPython?\n",
    "\n",
    "- Short for *I*nteractive *Python*\n",
    "- A platform for you to *interact* with your code and data\n",
    "- The *notebook*: a system for *literate computing*\n",
    "  * The combination of narrative, code and results\n",
    "  * Weave your scientific narratives together with your computational process\n",
    "- Tools for easy parallel computing\n",
    "  * Interact with *many* processes"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# IPython at the terminal"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "The basic IPython client: at the terminal, simply type `ipython`:\n",
    "\n",
    "    $ ipython\n",
    "    Python 3.5.1 |Anaconda 4.0.0 (x86_64)| (default, Dec  7 2015, 11:24:55) \n",
    "    Type \"copyright\", \"credits\" or \"license\" for more information.\n",
    "\n",
    "    IPython 4.1.2 -- An enhanced Interactive Python.\n",
    "    ?         -> Introduction and overview of IPython's features.\n",
    "    %quickref -> Quick reference.\n",
    "    help      -> Python's own help system.\n",
    "    object?   -> Details about 'object', use 'object??' for extra details.\n",
    "\n",
    "    In [1]: \n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# The IPython book\n",
    "\n",
    "<center>\n",
    "<h2>Also introduces Numpy, Pandas and Matplotlib</h2>\n",
    "\n",
    "<a href=\"http://www.packtpub.com/learning-ipython-for-interactive-computing-and-data-visualization/book\" target=\"_blank\">The IPython book</a>\n",
    "</center>"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# Some other tutorial help/resources :\n",
    "\n",
    "   - The [IPython website](http://ipython.org)\n",
    "   - Search for \"IPython in depth\" tutorial on youtube and pyvideo, much longer, much deeper\n",
    "   - Ask for help on [Stackoverflow, tag it \"ipython\"](http://stackoverflow.com/questions/tagged/ipython)\n",
    "   - [Mailing list](http://mail.scipy.org/mailman/listinfo/ipython-dev)\n",
    "   - File a [github issue](http://github.com/ipython/ipython)\n",
    "   - [Twitter](https://twitter.com/IPythonDev)\n",
    "   - [Reddit](http://www.reddit.com/r/IPython)\n",
    "   - [Notebook Gallery](https://github.com/ipython/ipython/wiki/A-gallery-of-interesting-IPython-Notebooks)\n",
    "     - full books\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# IPython: beyond plain Python"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "When executing code in IPython, all valid Python syntax works as-is, but IPython provides a number of features designed to make the interactive experience more fluid and efficient."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## First things first: running code, getting help"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "In the notebook, to run a cell of code, hit `Shift-Enter`. This executes the cell and puts the cursor in the next cell below, or makes a new one if you are at the end.  Alternately, you can use:\n",
    "    \n",
    "- `Alt-Enter` to force the creation of a new cell unconditionally (useful when inserting new content in the middle of an existing notebook).\n",
    "- `Control-Enter` executes the cell and keeps the cursor in the same cell, useful for quick experimentation of snippets that you don't need to keep permanently."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello\n"
     ]
    }
   ],
   "source": [
    "print(\"Hello\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Getting help"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Help with `?`\n",
    "\n",
    "Typing `object_name?` will print all sorts of details about any object, including docstrings, function definition lines (for call arguments) and constructor details for classes."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "import scipy.optimize\n",
    "scipy.optimize.bisect?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "scipy.optimize?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "*int*?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "An IPython quick reference card:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "%quickref"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Tab completion"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Tab completion, especially for attributes, is a convenient way to explore the structure of any object you’re dealing with. Simply type `object_name.<TAB>` to view the object’s attributes. Besides Python objects and keywords, tab completion also works on file and directory names."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import collections"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "collections."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## The interactive workflow: input, output, history"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "12"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "2 + 10"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "22"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_ + 10"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Output control\n",
    "\n",
    "You can suppress the storage and rendering of output if you append `;` to the last cell (this comes in handy when plotting with matplotlib, for example):"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "10 + 20;"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "22"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Output history\n",
    "\n",
    "The output is stored in `_N` and `Out[N]` variables:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_8 == Out[8]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{7: 12, 8: 22, 10: 22, 11: True}"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Out"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "And the last three have shorthands for convenience:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "last output: True\n",
      "next one   : 22\n",
      "and next   : 22\n"
     ]
    }
   ],
   "source": [
    "print('last output:', _)\n",
    "print('next one   :', __)\n",
    "print('and next   :', ___)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## The input history is also available"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'_8 == Out[8]'"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "In[11]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'In[11]'"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_i"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'In[11]'"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_ii"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "last input: _ii\n",
      "next one  : _i\n",
      "and next  : In[11]\n"
     ]
    }
   ],
   "source": [
    "print('last input:', _i)\n",
    "print('next one  :', _ii)\n",
    "print('and next  :', _iii)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "print(\"Hello\")\n",
      "import scipy.optimize\n",
      "scipy.optimize.bisect?\n",
      "scipy.optimize?\n",
      "*int*?\n",
      "%quickref\n",
      "import collections\n",
      "2 + 10\n",
      "_ + 10\n",
      "10 + 20;\n",
      "_\n",
      "_8 == Out[8]\n",
      "Out\n",
      "print('last output:', _)\n",
      "print('next one   :', __)\n",
      "print('and next   :', ___)\n",
      "In[11]\n",
      "_i\n",
      "_ii\n",
      "print('last input:', _i)\n",
      "print('next one  :', _ii)\n",
      "print('and next  :', _iii)\n",
      "%history\n"
     ]
    }
   ],
   "source": [
    "%history"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "# Accessing the underlying operating system\n",
    "\n",
    "**Note:** the commands below work on Linux or Macs, but may behave differently on Windows, as the underlying OS is different. IPython's ability to access the OS is still the same, it's just the syntax that varies per OS."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "/Users/fangohr/hg/teaching-python/notebook\r\n"
     ]
    }
   ],
   "source": [
    "!pwd"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "My current directory's files:\n",
      "['IPython-beyond-plain-Python-Fernando-Perez.ipynb', 'IPythonNotebookIntroduction.html', 'IPythonNotebookIntroduction.ipynb', 'Makefile', 'Matplotlib.html', 'Matplotlib.ipynb', 'Testing-intro.ipynb', '__pycache__', 'helloworld.py', 'inverse-function-through-rootfinding.ipynb', 'lab1.ipynb', 'lab1.pdf', 'lab2.ipynb', 'lab3.ipynb', 'lab4.ipynb', 'lab5.ipynb', 'lab6.ipynb', 'lab7.ipynb', 'lab8.ipynb', 'mod.py', 'same-or-differents-object.ipynb', 'speed-map-vs-for-loop.ipynb', 'test.txt', 'update-web.sh']\n"
     ]
    }
   ],
   "source": [
    "files = !ls\n",
    "print(\"My current directory's files:\")\n",
    "print(files)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[IPython-beyond-plain-Python-Fernando-Perez.ipynb, IPythonNotebookIntroduction.html, IPythonNotebookIntroduction.ipynb, Makefile, Matplotlib.html, Matplotlib.ipynb, Testing-intro.ipynb, __pycache__, helloworld.py, inverse-function-through-rootfinding.ipynb, lab1.ipynb, lab1.pdf, lab2.ipynb, lab3.ipynb, lab4.ipynb, lab5.ipynb, lab6.ipynb, lab7.ipynb, lab8.ipynb, mod.py, same-or-differents-object.ipynb, speed-map-vs-for-loop.ipynb, test.txt, update-web.sh]\r\n"
     ]
    }
   ],
   "source": [
    "!echo $files"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "IPYTHON-BEYOND-PLAIN-PYTHON-FERNANDO-PEREZ.IPYNB\r\n"
     ]
    }
   ],
   "source": [
    "!echo {files[0].upper()}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Beyond Python: magic functions"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "The IPython 'magic' functions are a set of commands, invoked by prepending one or two `%` signs to their name, that live in a namespace separate from your normal Python variables and provide a more command-like interface.  They take flags with `--` and arguments without quotes, parentheses or commas. The motivation behind this system is two-fold:\n",
    "    \n",
    "- To provide an orthogonal namespace for controlling IPython itself and exposing other system-oriented functionality.\n",
    "\n",
    "- To expose a calling mode that requires minimal verbosity and typing while working interactively.  Thus the inspiration taken from the classic Unix shell style for commands."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "%magic"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "Line vs cell magics:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "The slowest run took 4.48 times longer than the fastest. This could mean that an intermediate result is being cached.\n",
      "1000000 loops, best of 3: 276 ns per loop\n"
     ]
    }
   ],
   "source": [
    "%timeit range(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1000000 loops, best of 3: 571 ns per loop\n"
     ]
    }
   ],
   "source": [
    "%%timeit\n",
    "range(10)\n",
    "range(100)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Line magics can be used even inside code blocks:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "size: 0\n",
      "The slowest run took 5.83 times longer than the fastest. This could mean that an intermediate result is being cached.\n",
      "10000000 loops, best of 3: 194 ns per loop\n",
      "size: 100\n",
      "The slowest run took 4.54 times longer than the fastest. This could mean that an intermediate result is being cached.\n",
      "1000000 loops, best of 3: 301 ns per loop\n",
      "size: 200\n",
      "1000000 loops, best of 3: 299 ns per loop\n",
      "size: 300\n",
      "The slowest run took 6.27 times longer than the fastest. This could mean that an intermediate result is being cached.\n",
      "1000000 loops, best of 3: 339 ns per loop\n",
      "size: 400\n",
      "1000000 loops, best of 3: 343 ns per loop\n"
     ]
    }
   ],
   "source": [
    "for i in range(5):\n",
    "    size = i*100\n",
    "    print('size:',size)\n",
    "    %timeit range(size)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "Magics can do anything they want with their input, so it doesn't have to be valid Python:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "My shell is: /bin/bash\n",
      "My system uptime is:\n",
      "15:06  up 11 days,  2:33, 12 users, load averages: 2.01 1.98 2.06\n"
     ]
    }
   ],
   "source": [
    "%%bash\n",
    "echo \"My shell is:\" $SHELL\n",
    "echo \"My system uptime is:\"\n",
    "uptime"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Another interesting cell magic: create any file you want locally from the notebook:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Overwriting test.txt\n"
     ]
    }
   ],
   "source": [
    "%%file test.txt\n",
    "This is a test file!\n",
    "It can contain anything I want...\n",
    "\n",
    "more..."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "This is a test file!\r\n",
      "It can contain anything I want...\r\n",
      "\r\n",
      "more..."
     ]
    }
   ],
   "source": [
    "!cat test.txt"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "Let's see what other magics are currently defined in the system:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "application/json": {
       "cell": {
        "!": "OSMagics",
        "HTML": "Other",
        "SVG": "Other",
        "bash": "Other",
        "capture": "ExecutionMagics",
        "debug": "ExecutionMagics",
        "file": "Other",
        "html": "DisplayMagics",
        "javascript": "DisplayMagics",
        "latex": "DisplayMagics",
        "perl": "Other",
        "prun": "ExecutionMagics",
        "pypy": "Other",
        "python": "Other",
        "python2": "Other",
        "python3": "Other",
        "ruby": "Other",
        "script": "ScriptMagics",
        "sh": "Other",
        "svg": "DisplayMagics",
        "sx": "OSMagics",
        "system": "OSMagics",
        "time": "ExecutionMagics",
        "timeit": "ExecutionMagics",
        "writefile": "OSMagics"
       },
       "line": {
        "alias": "OSMagics",
        "alias_magic": "BasicMagics",
        "autocall": "AutoMagics",
        "automagic": "AutoMagics",
        "autosave": "KernelMagics",
        "bookmark": "OSMagics",
        "cat": "Other",
        "cd": "OSMagics",
        "clear": "KernelMagics",
        "colors": "BasicMagics",
        "config": "ConfigMagics",
        "connect_info": "KernelMagics",
        "cp": "Other",
        "debug": "ExecutionMagics",
        "dhist": "OSMagics",
        "dirs": "OSMagics",
        "doctest_mode": "BasicMagics",
        "ed": "Other",
        "edit": "KernelMagics",
        "env": "OSMagics",
        "gui": "BasicMagics",
        "hist": "Other",
        "history": "HistoryMagics",
        "install_default_config": "DeprecatedMagics",
        "install_ext": "ExtensionMagics",
        "install_profiles": "DeprecatedMagics",
        "killbgscripts": "ScriptMagics",
        "ldir": "Other",
        "less": "KernelMagics",
        "lf": "Other",
        "lk": "Other",
        "ll": "Other",
        "load": "CodeMagics",
        "load_ext": "ExtensionMagics",
        "loadpy": "CodeMagics",
        "logoff": "LoggingMagics",
        "logon": "LoggingMagics",
        "logstart": "LoggingMagics",
        "logstate": "LoggingMagics",
        "logstop": "LoggingMagics",
        "ls": "Other",
        "lsmagic": "BasicMagics",
        "lx": "Other",
        "macro": "ExecutionMagics",
        "magic": "BasicMagics",
        "man": "KernelMagics",
        "matplotlib": "PylabMagics",
        "mkdir": "Other",
        "more": "KernelMagics",
        "mv": "Other",
        "notebook": "BasicMagics",
        "page": "BasicMagics",
        "pastebin": "CodeMagics",
        "pdb": "ExecutionMagics",
        "pdef": "NamespaceMagics",
        "pdoc": "NamespaceMagics",
        "pfile": "NamespaceMagics",
        "pinfo": "NamespaceMagics",
        "pinfo2": "NamespaceMagics",
        "popd": "OSMagics",
        "pprint": "BasicMagics",
        "precision": "BasicMagics",
        "profile": "BasicMagics",
        "prun": "ExecutionMagics",
        "psearch": "NamespaceMagics",
        "psource": "NamespaceMagics",
        "pushd": "OSMagics",
        "pwd": "OSMagics",
        "pycat": "OSMagics",
        "pylab": "PylabMagics",
        "qtconsole": "KernelMagics",
        "quickref": "BasicMagics",
        "recall": "HistoryMagics",
        "rehashx": "OSMagics",
        "reload_ext": "ExtensionMagics",
        "rep": "Other",
        "rerun": "HistoryMagics",
        "reset": "NamespaceMagics",
        "reset_selective": "NamespaceMagics",
        "rm": "Other",
        "rmdir": "Other",
        "run": "ExecutionMagics",
        "save": "CodeMagics",
        "sc": "OSMagics",
        "set_env": "OSMagics",
        "store": "StoreMagics",
        "sx": "OSMagics",
        "system": "OSMagics",
        "tb": "ExecutionMagics",
        "time": "ExecutionMagics",
        "timeit": "ExecutionMagics",
        "unalias": "OSMagics",
        "unload_ext": "ExtensionMagics",
        "who": "NamespaceMagics",
        "who_ls": "NamespaceMagics",
        "whos": "NamespaceMagics",
        "xdel": "NamespaceMagics",
        "xmode": "BasicMagics"
       }
      },
      "text/plain": [
       "Available line magics:\n",
       "%alias  %alias_magic  %autocall  %automagic  %autosave  %bookmark  %cat  %cd  %clear  %colors  %config  %connect_info  %cp  %debug  %dhist  %dirs  %doctest_mode  %ed  %edit  %env  %gui  %hist  %history  %install_default_config  %install_ext  %install_profiles  %killbgscripts  %ldir  %less  %lf  %lk  %ll  %load  %load_ext  %loadpy  %logoff  %logon  %logstart  %logstate  %logstop  %ls  %lsmagic  %lx  %macro  %magic  %man  %matplotlib  %mkdir  %more  %mv  %notebook  %page  %pastebin  %pdb  %pdef  %pdoc  %pfile  %pinfo  %pinfo2  %popd  %pprint  %precision  %profile  %prun  %psearch  %psource  %pushd  %pwd  %pycat  %pylab  %qtconsole  %quickref  %recall  %rehashx  %reload_ext  %rep  %rerun  %reset  %reset_selective  %rm  %rmdir  %run  %save  %sc  %set_env  %store  %sx  %system  %tb  %time  %timeit  %unalias  %unload_ext  %who  %who_ls  %whos  %xdel  %xmode\n",
       "\n",
       "Available cell magics:\n",
       "%%!  %%HTML  %%SVG  %%bash  %%capture  %%debug  %%file  %%html  %%javascript  %%latex  %%perl  %%prun  %%pypy  %%python  %%python2  %%python3  %%ruby  %%script  %%sh  %%svg  %%sx  %%system  %%time  %%timeit  %%writefile\n",
       "\n",
       "Automagic is ON, % prefix IS NOT needed for line magics."
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "%lsmagic"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Running normal Python code: execution and errors"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Not only can you input normal Python code, you can even paste straight from a Python or IPython shell session:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "1\n",
      "2\n",
      "3\n",
      "5\n",
      "8\n"
     ]
    }
   ],
   "source": [
    ">>> # Fibonacci series:\n",
    "... # the sum of two elements defines the next\n",
    "... a, b = 0, 1\n",
    ">>> while b < 10:\n",
    "...     print(b)\n",
    "...     a, b = b, a+b"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0 1 2 3 4 5 6 7 8 9 "
     ]
    }
   ],
   "source": [
    "In [1]: for i in range(10):\n",
    "   ...:     print(i, end=' ')\n",
    "   ...:     "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Error display\n",
    "And when your code produces errors, you can control how they are displayed with the `%xmode` magic:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Overwriting mod.py\n"
     ]
    }
   ],
   "source": [
    "%%file mod.py\n",
    "\n",
    "def f(x):\n",
    "    return 1.0/(x-1)\n",
    "\n",
    "def g(y):\n",
    "    return f(y+1)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Now let's call the function `g` with an argument that would produce an error:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "ename": "ZeroDivisionError",
     "evalue": "float division by zero",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mZeroDivisionError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-34-a54c5799f57e>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;32mimport\u001b[0m \u001b[0mmod\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mmod\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mg\u001b[0;34m(y)\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 6\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m+\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mf\u001b[0;34m(x)\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      2\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 3\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0;36m1.0\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m-\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mZeroDivisionError\u001b[0m: float division by zero"
     ]
    }
   ],
   "source": [
    "import mod\n",
    "mod.g(0)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Plain exceptions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Exception reporting mode: Plain\n"
     ]
    },
    {
     "ename": "ZeroDivisionError",
     "evalue": "float division by zero",
     "output_type": "error",
     "traceback": [
      "Traceback \u001b[0;36m(most recent call last)\u001b[0m:\n",
      "  File \u001b[1;32m\"<ipython-input-35-8932f4bf53fa>\"\u001b[0m, line \u001b[1;32m2\u001b[0m, in \u001b[1;35m<module>\u001b[0m\n    mod.g(0)\n",
      "  File \u001b[1;32m\"/Users/fangohr/hg/teaching-python/notebook/mod.py\"\u001b[0m, line \u001b[1;32m6\u001b[0m, in \u001b[1;35mg\u001b[0m\n    return f(y+1)\n",
      "\u001b[0;36m  File \u001b[0;32m\"/Users/fangohr/hg/teaching-python/notebook/mod.py\"\u001b[0;36m, line \u001b[0;32m3\u001b[0;36m, in \u001b[0;35mf\u001b[0;36m\u001b[0m\n\u001b[0;31m    return 1.0/(x-1)\u001b[0m\n",
      "\u001b[0;31mZeroDivisionError\u001b[0m\u001b[0;31m:\u001b[0m float division by zero\n"
     ]
    }
   ],
   "source": [
    "%xmode plain\n",
    "mod.g(0)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Verbose exceptions"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Exception reporting mode: Verbose\n"
     ]
    },
    {
     "ename": "ZeroDivisionError",
     "evalue": "float division by zero",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mZeroDivisionError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-36-539f73e80e01>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0mget_ipython\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mmagic\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'xmode verbose'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mmod\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m        \u001b[0;36mglobal\u001b[0m \u001b[0;36mmod.g\u001b[0m \u001b[0;34m= <function g at 0x10a5e9b70>\u001b[0m\n",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mg\u001b[0;34m(y=0)\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 6\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m+\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m        \u001b[0;36mglobal\u001b[0m \u001b[0;36mf\u001b[0m \u001b[0;34m= <function f at 0x10a5e9d08>\u001b[0m\u001b[0;34m\n        \u001b[0m\u001b[0;36my\u001b[0m \u001b[0;34m= 0\u001b[0m\n",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mf\u001b[0;34m(x=1)\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      2\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 3\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0;36m1.0\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m-\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m        \u001b[0;36mx\u001b[0m \u001b[0;34m= 1\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mZeroDivisionError\u001b[0m: float division by zero"
     ]
    }
   ],
   "source": [
    "%xmode verbose\n",
    "mod.g(0)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "The default `%xmode` is \"context\", which shows additional context but not all local variables.  Let's restore that one for the rest of our session."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Exception reporting mode: Context\n"
     ]
    }
   ],
   "source": [
    "%xmode context"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Raw Input in the notebook"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Since 1.0 the IPython notebook web application support `raw_input` which for example allow us to invoke the `%debug` magic in the notebook:"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "ename": "ZeroDivisionError",
     "evalue": "float division by zero",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mZeroDivisionError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-38-5e708f13c839>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mmod\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mg\u001b[0;34m(y)\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 6\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m+\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m in \u001b[0;36mf\u001b[0;34m(x)\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      2\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 3\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0;36m1.0\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m-\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      4\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mZeroDivisionError\u001b[0m: float division by zero"
     ]
    }
   ],
   "source": [
    "mod.g(0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "> \u001b[0;32m/Users/fangohr/hg/teaching-python/notebook/mod.py\u001b[0m(3)\u001b[0;36mf\u001b[0;34m()\u001b[0m\n",
      "\u001b[0;32m      1 \u001b[0;31m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0m\u001b[0;32m      2 \u001b[0;31m\u001b[0;32mdef\u001b[0m \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0m\u001b[0;32m----> 3 \u001b[0;31m    \u001b[0;32mreturn\u001b[0m \u001b[0;36m1.0\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m-\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0m\u001b[0;32m      4 \u001b[0;31m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0m\u001b[0;32m      5 \u001b[0;31m\u001b[0;32mdef\u001b[0m \u001b[0mg\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0m\n",
      "ipdb> p x\n",
      "1\n",
      "ipdb> exit\n"
     ]
    }
   ],
   "source": [
    "%debug"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "Don't foget to exit your debugging session. Raw input can of course be use to ask for user input:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Are you enjoying this tutorial ?mostly\n",
      "enjoy is : mostly\n"
     ]
    }
   ],
   "source": [
    "enjoy = input('Are you enjoying this tutorial ?')\n",
    "print('enjoy is :', enjoy)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## Plotting in the notebook"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "This imports numpy as `np` and matplotlib's plotting routines as `plt`, plus setting lots of other stuff for you to work interactivel very easily:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "%matplotlib inline"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "from matplotlib.pyplot import gcf"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "data": {
      "image/png": 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qnbRl+FFq8AFx+EAGHf7f/R03SJsyxfVI3DFyJP/yJ1nQYgoR/INIpJOeDF8E\n30NeeIGd/Q03uB6JW+rqgHHj/HT5EukcRHe3zKSTtjrq8KNGOjYz/CSRjkzaesbevcA3vgH86EfZ\n+c9Jgo+xjlLmF1717cv12XE3rA6DjrYKgP5uma4dvotIRyZto5EZwf/ud4HjjgMuvND1SPzAR8Hf\nvfvgxh+mIDIf6+hy+H37cguMjo7k5wLcL7xKQ1lm3gU/E5O2L77Iq2rfftv1SPzBR8E3HecEBLHO\n2LFmzq9L8IkO5vhDhiQ/n2uHH2elre2yTGmtkHI2bwauugr4+c/Z2QnMxIn5FXwbDl/HSltA78Rt\nkgxfV1lm3EhHqejXs5Xhy8IrT+jsBC69FPjSl4DPfMb1aPxiwgT/VttmSfB1OHxAr+AncfjB/rpx\nhDcgjuDX1wM9e3IzOtPXk0gn5YJ/ww28y87NN7seiX9IpGPu/DoFX2ctfpIMv6GBq7uSbGQepywT\niJ/jS4YfndQK/i23AI88wv3ue2RiJkIvjY0ssEl+gXUjDr87vjh8IHmOH6csE4if48eJdPbti/YU\n097OprJnz+jj85FUCv799wPf/z7w/PPA8OGuR+MnPXoAo0cD69a5HslBsiD4HR0sNHGErRy+CX6S\nWvw4kQ4QvzQzquDX1fGTTJTNgQJ3n5WeXKkT/Ntu49W0zzzDXSGFyvg2cZuFSCfohR9l39Zq6Ip0\nlHLv8H2PdIDosU6WFl0BmgSfiM4hoveJaCkRfafCMT8momVE9CYRHRv1Gh0dXGv/wx8C8+cDRx2V\nfNxZx7eJ2yw4fJ1xDqDP4e/Zw+41SbzpKtKxLfhRSjOzlN8DGgSfiOoA/ATA2QBmALiUiA4vOeZc\nAJOVUlMBXA3g1ijXWLIEOPVU4PXXgQULgMmTk446H/g2cWt6t6uAoUPNOXxfBT/JhG1AktLM9nY2\nZWF3nyrGVoYfXCuqwxfBP5SZAJYppVYrpdoBPAigdL3rhQDuBQCl1KsABhJRzV/9VauAr38dOPlk\n4CtfAZ59VjL7KPgm+DYjHVMOX1dbhQBdkU7SOAdI5vCD/D5O1p0kw48aIUWtxRfB704jgLVFn68r\nvFbtmJYyx3zEDTdwL/vjj+df3iVLgGuuyc7EiS18EvzOTmDbNjuL40xHOroWXQH6HH6SRVcBSQU/\n7kR23Egnaj98ILrDz9KiK8DT1grz58/BEUcAZ58NnHFGM4YPb3Y9pFTi06Ttli3sjG2U0AaTtkrp\nNwm6Ix3z8K82AAAaUElEQVRdDdR8cfhxsB3pZCHDnzdvHubNmxf5fTp+/VoAjC/6fGzhtdJjxtU4\n5iNeemmOhmEJ48ZxWWZnJ69odImtOAfgHLlXLz25dikmMnxdkU7Sf2uSsswkgm+rLBPITqTT3NyM\n5ubmjz6/6aabQr1PR6SzEMAUIppARA0ALgHweMkxjwO4HACIaBaA7UqpVg3XFqrQuze73Q0bXI/E\nruAD5mIdnydtXTr8OI3TAnwvy/RR8OOSWPCVUp0ArgXwHIB3ATyolHqPiK4moq8VjnkKwEoiWg7g\nNgDfSHpdIRy+5PguBN9EpY5EOuVJGunYcvhxMvwsCb6WRFUp9QyA6SWv3Vby+bU6riVEIxD82bPd\njsO24Juq1PE10tExadu/P7BsWbz3Jo10WioGvOVRKp77jpPhZ2nSNnUrbYVo+DJxK5FOebIU6dic\ntN23jyPLqCues5Lhx0UEP+P4EumY3tqwlLREOocdxguWkja50zVp66osM2qkE7dcUlorCJnGl/YK\nbW12VtkGpCXSKd71KgmuHX7SSCeqw49Tgw9Ihi+Cn3F8cfgS6VRGh+C7XniVNNKx6fAlwxcyy4QJ\nwJo1yXYy0kFWqnSCbpk60dFeQZfDT1KHb7MsM67gR83wxeELqaJ/f57c2rzZ7TiyUKXT2clOVvdi\nrrxHOnEmbSXDj4cIfg5wHevs2cPdFJMKUhRMRDo7d7Io6uqFH6BL8F12y0wS6dietI0S6YjDF1KH\n64nbTZvY3dtsfmci0tm+HRg8WO85Ab8inbQ0TxOHHw8R/Bzg2uHbjnMAM5HOtm1mBN+XSduGBv47\nTomoi0gnzvUkwxcyTx4Ff/BgFsHOTn3nNFGhA+hpr6DD4QPxXX6SXjqB645SWCAOPx4i+DnA9Wpb\nF4JfX8/Oeft2fec0JfhJ2yscOAB0dfHkfFLiCn6SSKdHD/6zf3+060mGHx0R/BzgOsO3tbVhKbpj\nHZOCn8ThB+5exxxJ3NLMJJO2QPSJW1tlmeLwhdSRx0gH0F+p42ukoyvOAdxEOkD0iVtbkY44fCF1\nDBnC/Vp0dGWMg0vB11mpY3LSNsn/jY4J24C4pZlJBT/qxK1k+PEQwc8BRG5zfFeCn7dIRwdxHH5X\nV3JhjBrpxM3wDzuMxxp2glgcvpBKXOb4EulUR0eko2v1bxzB37uXt5RMso1mHIcfZ86gZ082QO3t\ntY/t6uIJcR2T4b4ggp8TXOb4WYl0fK3Sce3wk8Y5QPQM38YOW3v3stjbXDBoGhH8nOAq0unq4pW2\nw4fbv3ZeIh2dGX4cwU9SkhkQJ9KxIfhZyu8BEfzc4Mrhb9/OYhCs4rSJCYdvqrVCmjP8pCWZQPRI\nJ6ngh6nFz1p+D4jg5wZXGb6rOAfQn+Fv22bG4ffqxX/v2xfv/boz/Kh1+LoiHRuTtkD4Wnxx+EJq\nceXwbW9tWExaIh0gWayj0+HHKcvUEenYdvhhBF8cvpBaRo5kYYjahjYprh2+rkinvZ0deFJhq0SS\nWMeHSMf2pG3cKh0gfKQjDl9ILXV1wLhxvPuVTTZuBEaNsnvNAJ2RTrDTlamKjSSVOq4nbXVk+D5O\n2orDF1KNixzfpeD378+uPE6731JMTdgG5N3h24x0JMMXcoGLHL+11Z3gE3GOryPWMZnfA8kzfJcL\nr2yXZXZ08J+4lV/i8IVc4KIW36XDB/TFOqYqdAKSRDp5c/iBu48br0mGL+QCFw7fteDrqtQx7fCT\nRDq6M/w4ZZk6Mvywgp9kwhYIH+mIwxdSTd4yfEBfpY6NSMcHh++qLDNKpJMkvwdkpa2QE2w7/K4u\nt2WZgL5Ix/SkbZIMf+dOfkLQQZoinSTXEocvZJ7GRu5ro6NqJQxbt7JjDFaSuiDrkU57O28NmDRS\nCWhoONglMiy26/CTrLIFJMMXckKPHsDo0cC6dXau5zrOAfRFOr5O2urc3hDg8/TrF61EUlcvHVuR\njmT4Qm6wmeP7IvhpcPhxI51gQZhOosY6ujJ83yIdcfhC6rGZ4/sg+FmPdHbu1FeDHxBV8G03T0ta\npRMlwxfBF1KNzVp8HwRfZ5WO6UnbOJGOL4Kvqz1ymK0HdTj8sBm+RDpCqpFIJx55inT6949Wi68j\n0unZk/s9hZksTjppGyXDF4cvpBrbkc7IkXauVQmJdKLjItIBwkctNjN8cfhCqslbhh9EOmGigmrY\nqNLZuTP6OF1P2nZ2coM6HcIYduLWVqQjDl9IPePHAy0t/ItqGh8E/7DDOCpIsg/Avn38/TLp9nr2\n5D9hhKgY1w4/KF2s06AkNgVfHL6QC3r1Yte7fr35a/kg+EDyWGfHDnb3pnrhB8TJ8V07fB35fUCU\n6hlbdfji8IXUYyPWaW9nMRo61Ox1wpC0UmfLFjv/jjiVOq4dvq78Hojm8JOutBWHL+QGG4Lf1gYM\nHw7U15u9ThiSVups3WpH8ONM3OrsoxPgSvBtTtpKhi/kBhu1+L7EOUDySGfLFj6HaeJGOrodfpSO\nmUnFtxhbGX5DAz+BdnRUP04cvpAJbNTi+yT4WY90TDj8sHX4riKdJIJPVNvld3bymgCXjf9MIIKf\nQ2xEOuvX+yX4SSMdGw4/TqRjwuG7inTCNm3T8VRRKz4KSk1NT9TbRgQ/h9gQ/JYWbsfsAzoiHVsO\nP06GnyXBD3NdHdl6LYefxfweEMHPJRMmAGvWJF+MVA2fBD9ppGPL4ceJdHwoy9SV4Ye9ro5r1irN\nzGJ+D4jg55J+/di9tLWZu8b69X4Jfhocftwqnbw5fBuRjjj8MhDRYCJ6joiWENGzRFTWaxDRKiJ6\ni4jeIKI/JbmmoAfTsY5PDn/IkPQ4/CiCv38//927t95x+Cz4StkRfHH45fkHAP+rlJoOYC6A71Y4\nrgtAs1LqOKXUzITXFDSQJ8FPi8OPGumYmLAF3JVlhhH8/ft557YePZJdSzL8eFwI4J7Cx/cA+FyF\n40jDtQSNmKzF37+fxWj4cDPnj0pa6vCjRjomSjIBd2WZYQRflxBLhh+PEUqpVgBQSm0EMKLCcQrA\n80S0kIj+OuE1BQ1MnAisXGnm3EFJpo6GWjoYMoS7XXZ1xXu/rZW2USMdUw6/Vy9elNTeXvtY24Kv\n64kirxl+zQcjInoeQHFXcwIL+P8rc3iluo/ZSqkNRDQcLPzvKaXmV7rmnDlzPvq4ubkZzc3NtYYp\nRKSpCXj6aTPn9mnCFuAulH37sphGbXG8dy8vwrHxyz9wYLRIx5TDL97IvNb3S2fzNNuCXy3S8d3h\nz5s3D/PmzYv8vpqCr5Q6q9LXiKiViEYqpVqJaBSAsnUfSqkNhb83EdFvAcwEEErwBTNMngx88IGZ\nc/uU3wcEsU5UwQ/cvY0FOL44fOCg+Nb6fu3aZTfDF4fPlBrhm266KdT7kj50Pw7gysLHVwB4rPQA\nIupDRP0KH/cF8GkAixJeV0hIkOGb6Ivvo+DHrcW3ld8D0SdtTTl8IHylzq5d+m46NgVfMvx4/ADA\nWUS0BMAZAP4FAIhoNBE9WThmJID5RPQGgFcAPKGUei7hdYWEHHYYi2BLi/5z+yr4cSZubeX3AAvn\nrl3hF8SZdvhhJm51rgMIK/g6nHewaXolgo1dskai4ial1FYAZ5Z5fQOAzxY+Xgng2CTXEcwweTKw\nYgXvgqWTlhbgWM/+x+NW6th0+PX1LDK7d3NpZC1MLLoKCG4+NscQtkpHh8Pv16+62dE5N+ETntRR\nCC5oajKT4/s2aQski3RsbuIyeDBXFIXBZKQTdgJZp+D37s0dKqu1LdYV6dS6ueisPvIJEfwcY0rw\nJdKJTxTBNxnphJlP6OzkrFvXpG1xdVAlRPCTIYKfY4JIRydK+Sn4aYh0gHQ5/F27OHrSWcFUS4ht\nCb7OFcQ+IYKfY0w4/G3beOGOb78scSOdvDr8MKt+XTRu0zVpKw5fyB0mBN/H/B6IH+nk1eGHiXR2\n7gw3uRyFWn18dDr8atGRCL6QOUaM4J19ovZgr0ZLCzBmjL7z6SJupJNnhx9G8G07fJ1VOuLwhVxB\npN/lr1sHjB2r73y6GDYM2Lw5+vt8d/gmJ21rRTo6F10F1BLiYN7A9HUkwxcySVOT3onbVat4Fa9v\njBwJtLZG3+XLdllmlN7927fzDcIEvjp8XdcUhy/kEt09dXwV/H79+IkmzCbZAUrZ2/wkIKzD7+xk\nUcpapNO/f/UnC11PFSL4Qi6ZPBlYtkzf+XwVfIDnLFpbwx+/ezd32tS9o1Q1wgr+9u0syqZaUIeJ\ndEwIfq3r6poobmjgdtkHDpT/+u7dEukIGWT6dL2Cv3o176blI0GsExbbcQ4QXvC3bjUX5wDhHb7u\nKp0wgq/jJlNtkVdXFxcz+NwtMy4i+Dln2jRgyRI95zpwgAXVx0lbgAU/ysbtbW38HpuEFfxt28xG\nTa4inVqCb6M7Z9A4zZcNfHSSwX+SEIXGRv4Fi9KHvRLr1gGjRyffb9QUUSOdtjZ+j018cfj9+rHw\nVWufbULwa91odD5VVBL8rMY5gAh+7qmrA6ZO1RPrrFrlb5wDRI90WlvdCP727bWriUw7/Lq62i2S\nbTv8ri6+CZneYSurE7aACL4AfbHO6tX+TtgC0QXfhcMPJolrtSY27fCB2qttbWf4gfPWFbVUEvys\ntkYGRPAFsOAvXZr8PD5X6ADxMnzbgg+EawOxbZt5wa8Vr2zfHn3LyCTX1H2DEYcv5JLp0/U4fN8F\nPw0ZPhBuVbCN9QG1BN/ETaeaw9e9slcyfCGX6HT4vmf4GzeGP95nwbfh8IcMqT6BbFvwdc8ZiMMX\nckkg+FHbDpTie4Y/ZgywYUP4430WfBsOv1qbB6WyG+lIhi9kmsGDue44ihiW0tHB7/e1Bh9gd9jV\nFW6vVsBNHT7gj8MfPLiy4O/dy4uXdG/03bcvn7tcOaiJSKfcz4JEOkLmSRrrrFvHbrihQd+YdEMU\n3uV3dbHoDhtmflyl+OTwK0U6pm44ROziywmx7kin0nUk0hEyz/TpyQTf9wnbgDFjeJOWWmzbxr/0\nLm5gw4b5UaVTLdIxef1KsY7uSGfQoPLX2bHD3MYyrhHBFwCww3///fjvX7kyW4K/YQOvGnZBLYev\nFLBpEzB8uNlxuBL8ShO3uiOdgQN5HqKUoDFdFhHBFwAARx0FLFoU//3LlvGKXd8ZPTqc4K9f727n\nrlqCv2MHZ+e9epkdR7U2Dy4EX3ekU83h656M9gURfAEA8LGPAW+/Hf/9y5bxU4LvhM3wXQr+0KHV\nBd+GuwfcOnwbkY44fCG3jB3LLWGjrEQtZunS9Ah+2h3+pk12ykVdZvjlHL7u/kHi8IXcQsQu/513\nor9XKWD58nREOmkQ/KC1QqV1EW1t7h2+iRr8gEGDykdJuiuTxOELueboo+MJ/vr1/Biuu5GWCcaM\nAVpaah/nUvAbGrgOvFJ+bivSGTSInXZXV/evmXT4lXoJ6RZ8cfhCrokr+EuXpsPdA8C4cbxmoJyI\nFeNS8AFg1KjKbSBsrQCur+fS1HKimAXB792bF3jt23fo6+LwhVwQd+J2yZJ05PcAV7cMGFC7iZpr\nwR89urLg23L4QOVYJwuCT9Td5Xd2cmsFU5vDu0YEX/iIo44CFi+uvstROd59l9+bFiZMANasqfz1\nri4WW1d1+AA7/ErVRDZ7/FQS/C1bzK30LSf4HR28Atb0Dls7d/JTTRa3NwRE8IUiBgxgIVmxItr7\nFi0CZswwMyYTjB/Pjd4qsWkTfy9M17lXY/ToyoJv0+EPG8bXK6W11VyfoXKCv20bu3HdQjxo0KET\nt1leZQuI4AslxMnx3303XYJfy+GvXu2+zXMtwbfl8EeNKh9/2RZ8U72DSh2+yeojHxDBFw4hao7f\n1ga0t7uNP6JSy+H70BeomuDbKssEyk8ef/ghRyymcm6bgi8OX8g1xx8PvP56+OMDd09kbky6qeXw\nV64EJk2yN55yVJq0bW/nRVm22jaX2zQmaBtt6v88KActnksSh68HEXzhEGbOBF59NfxmKG+/zTFQ\nmkiDw680abthA4ttjx72xlEa6bS2mo2U6utZiIvXIYjD14MIvnAIY8fywp9Vq8Id/9prwAknGB2S\ndiZP5onpSje1Vav8cPjlBH/tWrubzJRz+Cbz+4DSWMek4BffWLK86AoQwRfKMHMm8Kc/hTv29dfT\nJ/iDBgF9+lTOyH1o9Tx4MC8I2rPn0NfXruXFY7Yol+Hb2Als6NBDy0FNCX7pE4zJclMfEMEXunHS\nScArr9Q+btcujkaOPNL8mHQzbRovGCtFKT/25iXi6Kl0rmHdOvsOv1ykY9vhmxLi0huay30QbCCC\nL3TjtNOAl1+ufdwbb3B+37On+THpptIOXxs3ck8gH/Y0bWrqvibCtsMfPJircorbD9gQ/NL6//Xr\nzQhx6VyJCL6QO044gcWwXCfBYl55BTjxRDtj0k2lPXwXL/bniWXyZOCDDw59zXaGX1fX3eWbnrQF\ngMZGfpoJMHWjK62GEsEXckdDAzBrFvD731c/7qWXgOZmK0PSzvTp5SOdRYv8aRNRzuGvW2fX4QPd\nJ243bGBnbJIJEw6tpDIl+CNG8JNEUAIqgi/kkuZmYO7cyl/v6ADmz+f4J41Mnw689173131qE9HU\n1N3hr1lj1+EDXLFUPI7ly/npwyTF8xf79/OkrYmbTEMDl2Fu2cI9lNrazN/MXCKCL5TlvPOAJ56o\nXLr45pvsuGyt+NTN1Kns7Eobg/nk8EsjnS1buGqnsdHuOIrjr127OOozfdMpdvgtLey66+vNXCuY\nuN28mVcPNzSYuY4PiOALZTn2WF7VuXhx+a8/+yxwxhl2x6ST+npeVfzaawdfU8qvvkCBsw5uusHN\nyPaq5uIJ7hUr+EZkuptk4PCVMj9RHax5yHqcA4jgCxUgAi64APif/yn/9UceAb7wBbtj0k3peoMV\nK9jh+VKH3b8/rxkIFsG9846bVc3FDt/WZvV9+/Kftjbzgh84fBH8GhDRRUS0iIg6iej4KsedQ0Tv\nE9FSIvpOkmsK9rj0UuCee7rHOsuX8y/H7NluxqWLUsF/4QXg9NPdjaccJ58M/OEP/LFrwVeKBd/W\n7maBy1+7lj82hTj88LwD4PMAXqp0ABHVAfgJgLMBzABwKREdnvC6XjJv3jzXQ0hE6fhPPpm3gSud\nvL37buCLXzSXqcYl6vf/5JOBBQuAAwf48+efB846S/+4wlJu/LNnuxf8IUN4rUVra3XB1/3zH+T4\nK1eaFfwjjuA1JXPnzjN6HR9IJPhKqSVKqWUAqqWKMwEsU0qtVkq1A3gQwIVJrusrWRN8IuCaa4Cb\nbz7o8nfsAG69FfjWt+yPrxZRv/+NjZyJP/UUl+XNnQuceaaZsYWhkuAvWMATpYsXc/tqF8yYASxc\nyE9EleY4dP/8n3gi8L//Czz9NPCpT2k99SGccQY/3T3//DynN3wb2MjwGwGsLfp8XeE1IQV89avc\nXOoXv2DR/9a3gPPP55LBLHD55cDtt/O/b8YM/x7pjzuOJ26/+12unDK1j2wtrrwSuO46Ll2cNcvO\nNS+7DLjrLt5y0ORiuHHjeGXvjh3AKaeYu44P1BR8InqeiN4u+vNO4e/zbQxQcEuPHsC99wLf+x4/\nyi9aBPz3f7selT4uvpjL8f72b/nJxTcaGoCf/Qy47Tbgm990N47LLgP27gWuvdZeldDEiRy72SgO\nOOss/vm21XbaFaTCNj6vdhKiFwH8nVLqz2W+NgvAHKXUOYXP/wGAUkr9oMK5kg9IEAQhZyilat6K\ndd7PKl1sIYApRDQBwAYAlwC4tNJJwgxaEARBiE7SsszPEdFaALMAPElETxdeH01ETwKAUqoTwLUA\nngPwLoAHlVJlFrULgiAIJtES6QiCIAj+481K2zQvziKiO4iolYjedj2WOBDRWCKaS0TvFiblr3M9\npigQUS8iepWI3iiM/0bXY4oKEdUR0Z+J6HHXY4kKEa0iorcK3/+Qe6X5AxENJKKHiei9wu/ASa7H\nFBYimlb4vv+58PeOar+/Xjj8wuKspQDOALAenPtfopR63+nAQkJEpwLYDeBepZSjSun4ENEoAKOU\nUm8SUT8ArwO4MC3ffwAgoj5KqT1EVA9gAYDrlFKpER8i+haAjwMYoJS6wPV4okBEHwD4uFJqW82D\nPYSI7gbwklLqLiLqAaCPUmqn42FFpqCj6wCcpJRaW+4YXxx+qhdnKaXmA0jlDzsAKKU2KqXeLHy8\nG8B7SNlaCaVUsPtrL3AxgnsnExIiGgvgPAC3ux5LTAj+aEkkiGgAgE8ope4CAKVURxrFvsCZAFZU\nEnvAn/8kWZzlCUQ0EcCxAF51O5JoFCKRNwBsBPC8Umqh6zFF4D8B/D1SdJMqQQF4nogWEtFfux5M\nRCYB2ExEdxVikZ8T0WGuBxWTLwF4oNoBvgi+4AGFOOcRAH9TcPqpQSnVpZQ6DsBYACcRkScbFVaH\niD4DoLXwhEWo3qbEV2YrpY4HP6VcU4g400IPAMcDuKXwb9gD4B/cDik6RNQTwAUAHq52nC+C3wKg\nuG3R2MJrgiUK2eUjAH6plHrM9XjiUngcfxHAOa7HEpLZAC4o5OAPAPgUEd3reEyRUEptKPy9CcBv\nwRFtWlgHYK1SKtgZ4RHwDSBtnAvg9cL/QUV8EfyPFmcRUQN4cVbaqhXS6s4C7gSwWCn1I9cDiQoR\nDSOigYWPDwNwFoBUTDgrpa5XSo1XSjWBf+7nKqUudz2usBBRn8KTIYioL4BPA1jkdlThUUq1AlhL\nREGX/zMAVNj2x2suRY04B9C70jY2SqlOIgoWZ9UBuCNNi7OI6H4AzQCGEtEaADcGk0BpgIhmA/gy\ngHcKObgCcL1S6hm3IwvNaAD3FKoU6gA8pJR6yvGY8sJIAL8ttETpAeBXSqnnHI8pKtcB+FUhFvkA\nwFWOxxMJIuoDnrD9Ws1jfSjLFARBEMzjS6QjCIIgGEYEXxAEISeI4AuCIOQEEXxBEIScIIIvCIKQ\nE0TwBUEQcoIIviAIQk4QwRcEQcgJ/x/FzXdE0SK6CgAAAABJRU5ErkJggg==\n",
      "text/plain": [
       "<matplotlib.figure.Figure at 0x10b4d96a0>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "x = np.linspace(0, 2*np.pi, 300)\n",
    "y = np.sin(x**2)\n",
    "plt.plot(x, y)\n",
    "plt.title(\"A little chirp\")\n",
    "f = gcf()  # let's keep the figure object around for later..."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "source": [
    "<!-- Sigil for slide mode, remove later once we fix transitions limitation -->"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "slideshow": {
     "slide_type": "slide"
    }
   },
   "source": [
    "## The IPython kernel/client model"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can also run an IPYthon notebook on a server, and connect to that notebook session remotely or from the local machine. This magic gives us some details:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{\n",
      "  \"control_port\": 57843,\n",
      "  \"signature_scheme\": \"hmac-sha256\",\n",
      "  \"key\": \"6db37163-d219-40eb-89b1-b6de8ac47715\",\n",
      "  \"iopub_port\": 57841,\n",
      "  \"hb_port\": 57844,\n",
      "  \"transport\": \"tcp\",\n",
      "  \"stdin_port\": 57842,\n",
      "  \"ip\": \"127.0.0.1\",\n",
      "  \"shell_port\": 57840,\n",
      "  \"kernel_name\": \"\"\n",
      "}\n",
      "\n",
      "Paste the above JSON into a file, and connect with:\n",
      "    $> ipython <app> --existing <file>\n",
      "or, if you are local, you can connect with just:\n",
      "    $> ipython <app> --existing /Users/fangohr/Library/Jupyter/runtime/kernel-bd50837b-7b59-4e0d-91eb-7eda64d01d22.json \n",
      "or even just:\n",
      "    $> ipython <app> --existing \n",
      "if this is the most recent IPython session you have started.\n"
     ]
    }
   ],
   "source": [
    "%connect_info"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "So for example we can open a text-based ipython console connected to this session using:\n",
    "\n",
    "```!jupyter console --existing```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Or open a QTConsole from here using"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false,
    "slideshow": {
     "slide_type": "fragment"
    }
   },
   "outputs": [],
   "source": [
    "%qtconsole\n"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.5.1"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 0
}