Clean up GzipFile mode string handling code.
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parent
d1a107132c
commit
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11
Lib/gzip.py
11
Lib/gzip.py
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@ -141,7 +141,7 @@ class GzipFile(io.BufferedIOBase):
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"""
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if mode and ('t' in mode or 'U' in mode):
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raise IOError("Mode " + mode + " not supported")
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raise ValueError("Invalid mode: {!r}".format(mode))
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if mode and 'b' not in mode:
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mode += 'b'
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if fileobj is None:
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@ -152,10 +152,9 @@ class GzipFile(io.BufferedIOBase):
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else:
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filename = ''
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if mode is None:
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if hasattr(fileobj, 'mode'): mode = fileobj.mode
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else: mode = 'rb'
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mode = getattr(fileobj, 'mode', 'rb')
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if mode[0:1] == 'r':
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if mode.startswith('r'):
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self.mode = READ
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# Set flag indicating start of a new member
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self._new_member = True
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@ -170,7 +169,7 @@ class GzipFile(io.BufferedIOBase):
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self.min_readsize = 100
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fileobj = _PaddedFile(fileobj)
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elif mode[0:1] == 'w' or mode[0:1] == 'a':
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elif mode.startswith(('w', 'a')):
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self.mode = WRITE
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self._init_write(filename)
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self.compress = zlib.compressobj(compresslevel,
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@ -179,7 +178,7 @@ class GzipFile(io.BufferedIOBase):
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zlib.DEF_MEM_LEVEL,
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0)
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else:
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raise IOError("Mode " + mode + " not supported")
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raise ValueError("Invalid mode: {!r}".format(mode))
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self.fileobj = fileobj
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self.offset = 0
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