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Issue #19222: Add support for the 'x' mode to the gzip module.

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Original patch by Tim Heaney.
This commit is contained in:
Nadeem Vawda 2013-10-19 00:11:13 +02:00
parent 8a9e99cffc
commit ee1be99e05
4 changed files with 57 additions and 13 deletions
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14
Lib/gzip.py
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@ -23,9 +23,9 @@ def open(filename, mode="rb", compresslevel=9,
The filename argument can be an actual filename (a str or bytes object), or
an existing file object to read from or write to.
The mode argument can be "r", "rb", "w", "wb", "a" or "ab" for binary mode,
or "rt", "wt" or "at" for text mode. The default mode is "rb", and the
default compresslevel is 9.
The mode argument can be "r", "rb", "w", "wb", "x", "xb", "a" or "ab" for
binary mode, or "rt", "wt", "xt" or "at" for text mode. The default mode is
"rb", and the default compresslevel is 9.
For binary mode, this function is equivalent to the GzipFile constructor:
GzipFile(filename, mode, compresslevel). In this case, the encoding, errors
@ -151,11 +151,11 @@ class GzipFile(io.BufferedIOBase):
fileobj, if discernible; otherwise, it defaults to the empty string,
and in this case the original filename is not included in the header.
The mode argument can be any of 'r', 'rb', 'a', 'ab', 'w', or 'wb',
depending on whether the file will be read or written. The default
The mode argument can be any of 'r', 'rb', 'a', 'ab', 'w', 'wb', 'x', or
'xb' depending on whether the file will be read or written. The default
is the mode of fileobj if discernible; otherwise, the default is 'rb'.
A mode of 'r' is equivalent to one of 'rb', and similarly for 'w' and
'wb', and 'a' and 'ab'.
'wb', 'a' and 'ab', and 'x' and 'xb'.
The compresslevel argument is an integer from 0 to 9 controlling the
level of compression; 1 is fastest and produces the least compression,
@ -201,7 +201,7 @@ class GzipFile(io.BufferedIOBase):
self.min_readsize = 100
fileobj = _PaddedFile(fileobj)
elif mode.startswith(('w', 'a')):
elif mode.startswith(('w', 'a', 'x')):
self.mode = WRITE
self._init_write(filename)
self.compress = zlib.compressobj(compresslevel,