[Matplotlib-users] Runtime Error on Solaris - Error Closing Dupe File Handle

[Bryan W. <bry...@gm...>]

Good afternoon,



My name is Bryan Williams. I work for the Florida Forest Service in their
Forest Logistics and Support Bureau.



I’m working on a program that takes weather data and visualizes it using
matplotlib and Basemap. I’m currently having an issue with matplotlib 1.4.3
for Python 3.4.3 running under Solaris 5.10. I am getting a Runtime Error
whenever I try calling the read_png file from matplotlib._png. (I’m using
this to add a small .png file of the Forest Service’s sheld to the
picture). The error is the following:



Traceback (most recent call last):

  File "drawmaps.py", line 845, in <module>

    arr_lena = read_png(fn)

RuntimeError: Error closing dupe file handle



I don’t quite understand the error I’m getting, and as you can see, the
traceback gives very little information. I also tried Google for help, but
to no avail; entering the error message as is into Google doesn’t return
anything relating to the problem, and putting quotes around “Error closing
dupe file handle” yields about 10 results, with one of them being an
unanswered question from 2014 regarding the same issue.



As per your request on the website, here’s what I get from uname –a:



SunOS [server name withheld] 5.10 Generic_141444-09 sun4v sparc
SUNW,SPARC-Enterprise-T5220



I built Python 3.4.3 from source and installed matplotlib through pip, and
didn’t make any changes to the matplotlibrc file.



I was able to reproduce the problem again running these commands in the
Python interactive prompt, which emulates the snippet of script that causes
the error:



Python 3.4.3 (default, May 15 2015, 13:52:23)

[GCC 4.9.2] on sunos5

Type "help", "copyright", "credits" or "license" for more information.

>>> from matplotlib._png import read_png

>>> from matplotlib.cbook import get_sample_data

>>> import os; path=os.getcwd()

>>> fn = get_sample_data(path + '/resources/shield.png', asfileobj=False)

>>> arr_lena = read_png(fn)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

RuntimeError: Error closing dupe file handle





If you’d like a copy of the problem script, please let me know. Any and all
help is greatly appreciated.



Thank you in advance!



-- BMW