Clean bmatrix/Bmatrix/etc from latex output when generating output for matplotlib rendering

[flacjacket]

Since there is a problem with the matplotlib rendering of latex matrices that include braces (such as bmatrix), in interactive/printing.py, the latex generation for matplotlib should include a workaround for this. This can be seen by running, from either a qtconsole or notebook:

In [1]: init_printing(use_latex='matplotlib')

In [2]: [x,y]
/home/sean/ipython/IPython/core/formatters.py:239: FormatterWarning: Exception in image/png formatter: 
\begin{bmatrix}x, & y\end{bmatrix}
^
Unknown symbol: \begin (at char 0), (line:1, col:1)
  FormatterWarning,
Out[2]: [x, y]

[jigarmistry]

In Ipython if you write:

In [1]: from sympy import init_printing

In [2]: init_printing(use_latex='matplotlib')

In [3]: [x,y]
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-3-114b0ad9bcca> in <module>()
----> 1 [x,y]

NameError: name 'x' is not defined

it will give error like this because no x is define yet.

[flacjacket]

Oops, my default profile loads sympy, and I have things like x and y defined by default. Any list with sympy objects should do this. To get x and y you can do something like from sympy.abc import x, y or from sympy import symbols; x, y = symbols('x y').

[asmeurer]

Or use init_session() instead of init_printing().

[moorepants]

This works fine for me on IPython 4 and SymPy master.

[moorepants]

I'm closing this. Please reopen if you can show how to reproduce.

[flacjacket]

Looks like this was fixed a while ago e532688, so this can stay closed