Error due to unusual font file

[Alan Jackson-2]

Trying to get a colleague to start using python, he ran into trouble,
getting an error exit whenever he tried to fire up
ipython -pylab

After much searching, he figured it out... it appears that a small patch may be
in order. Here is his note :

> I found it: I have a font installed in my personal fonts
> directory that has non-integral sides for the "bounding box"
> of the font.
>
> Fortunately, it seems like once I move my ~/.fonts
> directory "off to the side" and then run
>
> ipython -pylab
>
> then some of that configuration info must be cached, since I
> am able to move my .fonts file back and still have my ipython
> -pylab come up.
>
> The offending line is in the return statement below
>
> #Convert string the a python type
> _to_int = int
> _to_float = float
> _to_str =  str
>
> def _to_list_of_ints(s):
>     s = s.replace(',', ' ')
>     return [_to_int(val) for val in s.split()]
>
> and I think a fix would be along the lines of Alan's remark:
>
>     return [_to_int(_to_float(val)) for val in s.split()]
>
> This is in the file
>
> /glb/apps/sss/epd/2.5.4.2.30201/lib/python2.5/site-packages/ma
> tplotlib-0.98.5.2n1-py2.5-linux-x86_64.egg/matplotlib/afm.py
>
> Anyway, it works for me.

--
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[John Hunter-4]

On Thu, Nov 5, 2009 at 9:09 PM, Alan Jackson <alan@...> wrote:
> Trying to get a colleague to start using python, he ran into trouble,
> getting an error exit whenever he tried to fire up
> ipython -pylab
>

Thanks Alan, I committed a fix to svn HEAD which should prevent this
crash, with the following comment:

  # some afm files have floats where we are expecting ints -- there is
  # probably a better way to handle this (support floats, round rather
  # than truncate).  But I don't know what the best approach is now and
  # this change to _to_int should at least prevent mpl from crashing on
  # these JDH (2009-11-06)

  def _to_int(x):
      return int(float(x))

If other devs know the best way to handle this, please patch as necessary.

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