Chaowen,
This has been fixed, see https://github.com/sympy/sympy/issues/2822.
If you upgrade to SymPy 0.7.6, you shouldn't get the warning anymore.
Jason
moorepants.info
+01 530-601-9791
On Fri, Feb 13, 2015 at 11:00 AM, chaowen guo <gcwenken....@ttu.edu> wrote:
> I run the following code in IPython notebook
>
> import sympy
> sympy.init_printing()
> x=sympy.symbols("x",real=True)
> sympy.Abs(x)
>
> and always get the following warning:
>
> /usr/lib/python3/dist-packages/IPython/core/formatters.py:239:
> FormatterWarning: Exception in image/png formatter:
> \left\lvert{x}\right\rvert
> ^
> Expected a delimiter (at char 5), (line:1, col:6)
> FormatterWarning,
>
> Although the answer is correct, my program has a lot of formula with
> sympy.Abs. So it prints a lot of warning messages like the above one. It is
> pretty annoying.
>
> How to fix the problem?
>
> Chaowen GUO
>
>
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