On Tue, Aug 4, 2009 at 2:45 PM, Jouni K. Seppänen<[email protected]> wrote:
> John Hunter <[email protected]> writes:
>
>> # TODO: how to handle stale data in the cache that has been
>> # updated from svn -- is there a clean http way to get the current
>> # revision number that will not leave us at the mercy of html
>> # changes at sf?
>
> The mod_dav_svn server sends an ETag header that happens to contain the
> revision number where the file was last modified, and a Last-Modified
> header that contains the date of that revision. The clean http way to
> make use of these is to make a conditional request - I hacked up a
> processor class for urllib2 that does this, and checked it in.
Also, it would be preferable for the returned file object which
supports the "seek" method. This is what cbook.to_filehandle checks
for, and what mlab.csv2rec uses to rewind the file after doing a data
introspection pass through to get the data types. Eg,
>>> import matplotlib.mlab as mlab
>>> import matplotlib.cbook as cbook
>>> r = mlab.csv2rec( cbook.get_mpl_data('testdata.csv') )
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/jdhunter/dev/lib/python2.6/site-packages/matplotlib/mlab.py",
line 2108, in csv2rec
fh = cbook.to_filehandle(fname)
File "/Users/jdhunter/dev/lib/python2.6/site-packages/matplotlib/cbook.py",
line 339, in to_filehandle
raise ValueError('fname must be a string or file handle')
ValueError: fname must be a string or file handle
Perhaps we could return a plain file handle pointing to the cached data?
JDH
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