Popular recipes tagged "meta:forkof=578669"http://code.activestate.com/recipes/tags/meta:forkof=578669/2013-09-25T01:54:53-07:00ActiveState Code RecipesWrap a a file-like object in another that calls a user callback whenever read() is called on it. (Python)
2013-09-25T01:54:53-07:00Martin Millerhttp://code.activestate.com/recipes/users/155538/http://code.activestate.com/recipes/578674-wrap-a-a-file-like-object-in-another-that-calls-a-/
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Python
recipe 578674
by <a href="/recipes/users/155538/">Martin Miller</a>
(<a href="/recipes/tags/callback/">callback</a>, <a href="/recipes/tags/file/">file</a>, <a href="/recipes/tags/oop/">oop</a>, <a href="/recipes/tags/progress/">progress</a>, <a href="/recipes/tags/upload/">upload</a>).
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<p>Wraps a file-like object in another, but also calls a user callback with the number of bytes read whenever its <code>read()</code> method is called. Used for tracking upload progress, for example for a progress bar in a UI application.</p>