[Answered ]-Python: Parsing Timestamps Embedded in Filenames

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I wouldn’t use regexps for this; it’s best to avoid them when you don’t really need them. Here’s how I’d do it (untested):

def _get_timestamp(self):
    """Return the timestamp of a user's most recently uploaded avatar."""
    path = settings.USER_AVATAR_DIRECTORY + self._get_dir()
    filenames = [filename for filename in os.listdir(path)
                 if filename.partition('_')[0] == str(self.user_id)]
    filenames.sort(reverse=True)
    return (filenames[0].rpartition('_')[2].partition('.')[0]
            if filenames else None)
👤Antonis Christofides

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