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changeset: 74495:b86b54fcb5c2 user: Lars Gustäbel lars@gustaebel.de date: Wed Jan 18 14:01:17 2012 +0100 files: Lib/tarfile.py description: Issue #5689: Avoid excessive memory usage by using the default lzma preset. diff -r fe36edf3a341 -r b86b54fcb5c2 Lib/tarfile.py --- a/Lib/tarfile.py Wed Jan 18 09:32:25 2012 +0200 +++ b/Lib/tarfile.py Wed Jan 18 14:01:17 2012 +0100 @@ -1807,7 +1807,7 @@ return t @classmethod - def xzopen(cls, name, mode="r", fileobj=None, preset=9, **kwargs): + def xzopen(cls, name, mode="r", fileobj=None, preset=None, **kwargs): """Open lzma compressed tar archive name for reading or writing. Appending is not allowed. """ @@ -1819,10 +1819,6 @@ except ImportError: raise CompressionError("lzma module is not available") - if mode == "r": - # LZMAFile complains about a preset argument in read mode. - preset = None - fileobj = lzma.LZMAFile(filename=name if fileobj is None else None, mode=mode, fileobj=fileobj, preset=preset) /lars@gustaebel.de