New behavior of IPython printing for PR 2683

gistfile1.txt

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 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import sympy"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "sympy.__version__"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "pyout",
       "prompt_number": 2,
       "text": [
        "'0.7.4-git'"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "d = {'Something Funny': 0.0, '\\pi * \\cos{\\alpha': 1.0}"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 3
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "alpha, beta, gamma = sympy.symbols('alpha, beta, gamma')"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 4
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "sympy.init_printing()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 5
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "It used to render string types with LaTeX, but now that is removed so this dictionary now comes out as plain text."
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "d"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "pyout",
       "prompt_number": 6,
       "text": [
        "{'Something Funny': 0.0, '\\\\pi * \\\\cos{\\x07lpha': 1.0}"
       ]
      }
     ],
     "prompt_number": 6
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "{alpha: 1, beta: gamma, gamma:0.0}"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "latex": [
        "$$\\begin{Bmatrix}\\alpha : 1, & \\beta : \\gamma, & \\gamma : 0.0\\end{Bmatrix}$$"
       ],
       "metadata": {},
       "output_type": "pyout",
       "png": "iVBORw0KGgoAAAANSUhEUgAAANQAAAAaBAMAAAA9Em/vAAAAMFBMVEX///8AAAAAAAAAAAAAAAAA\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAv3aB7AAAAD3RSTlMAMolUmc0idhCru+9m\n3URozekSAAAACXBIWXMAAA7EAAAOxAGVKw4bAAACtElEQVRIDbVVQWgTQRR92Ww3m3QTA57FpVYr\nSG0uihdpEHrwojkIongI4sWDWKQ9iEIHrxUMnvQgBuxBT1rBgicXT4UqehLaS1MQDyoURUE9+f/f\n2d1JNlloIR8y77/3/8zLzM4mAHIHMPT4XBWLmebQneBcZI/Cn+E7AaM+uRQbfaxGVEp0bo+ntAzB\nPTUnh6axxC79rJznKrXKZXj1lDhYGKm5n7iqUVz6WLlLj1VqER+VjylxsLAGHOSqxkFWwILqXSTf\nhN3uFTP4M2BaUV3jTqwKwDc5/IzlzdJfYLtGgkbDanyuI43llkB6V3uvzMvZY50b8ptPkVfSGg8n\n/ymcYMYd7i+ymk1QrEptqlzruCsOf4nFBg39DnD1zvgyV9xXPK7d3wDt0wzv9WQbtHjY4fwE9vtA\nhGK1yOWXwFJBUaIjvSvqmo+qcFqwO8djKslV4Ey+GWmRRYQevb3OOaralMxYURthX6vtuMFTgO/H\nVJJVwEqWcGlXcoAaMVnF+yY1jraBI4dlRjikrHJVubdGy1FSesLaSgR6VtM1ohG655G/RPyeD0xx\nIYqUFT+Yh1FVcKyLCbH8RNsAPiiiER4LgOtksYdwivQ4UlYlOuqVuMzJRBcTYs0m2i16JMw0Vn5Q\nzjfQbsE7m1PEkhvo/iYaRzHAvg6z8AZS8oAOo8FKEkXFedhRrrnL3CCof/7kGo69C2z5muF7dfrN\neoBNmciTKbbe3tDPUt4rUupAmW6TGXZIpMOduFkFrSZoWpkTorzSjDJC42i0Wif8onMN2qpbDJnx\na9Gn7JmabxLOKwEN/DHiu5H3pNlWd83u1K6sJj2VwGwBDnVTk2VbmetUquY8zvlt7do3cZ8+AyLb\nasCk3cnyL2y92N3knc0q17n/guJxyPFIsUH+yZBtaPmvwfA9DIf/nMWV83uwjJAAAAAASUVORK5C\nYII=\n",
       "prompt_number": 7,
       "text": [
        "{\u03b1: 1, \u03b2: \u03b3, \u03b3: 0.0}"
       ]
      }
     ],
     "prompt_number": 7
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "sympy.init_printing(print_builtin=False)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 8
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "d"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "pyout",
       "prompt_number": 9,
       "text": [
        "{'Something Funny': 0.0, '\\\\pi * \\\\cos{\\x07lpha': 1.0}"
       ]
      }
     ],
     "prompt_number": 9
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "Dictionaries only render in LaTeX if all of their elements are SymPy types (including floats and integers). With the print_builtin flag False, the ints and floats will not render, thus the whole dict will not render."
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "{alpha: 1, beta: gamma, gamma:0.0}"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "pyout",
       "prompt_number": 10,
       "text": [
        "{beta: gamma, alpha: 1, gamma: 0.0}"
       ]
      }
     ],
     "prompt_number": 10
    }
   ],
   "metadata": {}
  }
 ]
}