obscure error message when '#' in text

[elimas9]

As in LaTeX, '#' has to be written '#'.
When using this library, if you wrote '#' by mistake, the error you got is obscure and is not pointing in any way to the actual error in the code.

[loreucci]

Hi, thank you for the report. Unfortunately it's not easy to point at the error in the code as the error is raised when using pyplot.show or pyplot.savefig, but the string actually causing the error can be set by any function that adds text to a figure (plot(..., label="#"), title("#") and so on).

However, I've added two wrappers around pyplot.show or pyplot.savefig that at least try to filter out all LaTeX output and print the offending string.

Do you mind trying out commit 3f65d60 and see if that helps?