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Issue #5689: Avoid excessive memory usage by using the default lzma preset.

This commit is contained in:
Lars Gustäbel 2012-01-18 14:01:17 +01:00
parent 50a4d5debb
commit c5e1199f38
1 changed files with 1 additions and 5 deletions
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6
Lib/tarfile.py
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@ -1807,7 +1807,7 @@ class TarFile(object):
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 @@ class TarFile(object):
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)