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"""Read and cache directory listings. The listdir() routine returns a sorted list of the files in a directory, using a cache to avoid reading the directory more often than necessary. The annotate() routine appends slashes to directories.""" from warnings import warnpy3k warnpy3k("the dircache module has been removed in Python 3.0", stacklevel=2) del warnpy3k import os __all__ = ["listdir", "opendir", "annotate", "reset"] cache = {} def reset(): """Reset the cache completely.""" global cache cache = {} def listdir(path): """List directory contents, using cache.""" try: cached_mtime, list = cache[path] del cache[path] except KeyError: cached_mtime, list = -1, [] mtime = os.stat(path).st_mtime if mtime != cached_mtime: list = os.listdir(path) 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] + '/'