[IPython-dev] Basemap Segfault in IPython; Works in Python

Patrick Marsh patrickmarshwx@gmail....
Tue Sep 3 11:36:58 CDT 2013


Hi, All,

I'm not sure what is going on, but the following fails in IPython (terminal
and notebook) but works just fine in regular Python.

I'm using OS X 10.8.4; git master for git master for Matplotlib (a091f6d),
IPython (9f92804), and Basemap (1d7664c); and geos version 3.4.2 (built by
Homebrew).

The following script will work from a Python prompt but fails (segfaults)
from the IPython prompt. After doing some digging it appears that the
segfault occurs when accessing some of the methods associated with the
generated geos module (_geoslib.so). I've rolled back to previous versions
of everything and I still have the same issues.

What I cannot figure out is why this would work with a pure Python
interpreter, but fail in the IPython console.


=====
import matplotlib.pyplot as plt
from mpl_toolkits.basemap import Basemap

m = Basemap()    # This is where the segfault occurs

m.drawcoastlines()
plt.show()
=====


I originally posted this on the IPython Users list and got no response, so
I thought I would try here before posting a bug on both IPython and
Basemap's Github issue trackers.


Thanks for any help or ideas on fixing this issue, or at least on how to
track down this issue...


Patrick
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