Showing content from http://svn.python.org/projects/python/tags/release12/Lib/dircache.py below:
# Module 'dircache' # # Return a sorted list of the files in a directory, using a cache # to avoid reading the directory more often than necessary. # Also contains a subroutine to append slashes to directories. import os cache = {} def listdir(path): # List directory contents, using cache try: cached_mtime, list = cache[path] del cache[path] except KeyError: cached_mtime, list = -1, [] try: mtime = os.stat(path)[8] except os.error: return [] if mtime <> cached_mtime: try: list = os.listdir(path) except os.error: return [] list.sort() cache[path] = mtime, list return list opendir = listdir # XXX backward compatibility def annotate(head, list): # Add '/' suffixes to directories for i in range(len(list)): if os.path.isdir(os.path.join(head, list[i])): list[i] = list[i] + '/'
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