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  r76896 | antoine.pitrou | 2009-12-19 22:01:10 +0100 (sam., 19 déc. 2009) | 3 lines

  Issue #7545: improve documentation of the `buffering` argument in io.open().
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  r76898 | antoine.pitrou | 2009-12-19 22:06:36 +0100 (sam., 19 déc. 2009) | 3 lines

  Remove superfetatory paragraph (left there by mistake).
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Antoine Pitrou 2009-12-19 21:08:31 +00:00
parent 1d523e1ae1
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Doc/library/io.rst
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@ -96,10 +96,20 @@ Module Interface
strings, the bytes having been first decoded using a platform-dependent
encoding or using the specified *encoding* if given.
*buffering* is an optional integer used to set the buffering policy. By
default full buffering is on. Pass 0 to switch buffering off (only allowed
in binary mode), 1 to set line buffering, and an integer > 1 to indicate the
size of the buffer.
*buffering* is an optional integer used to set the buffering policy.
Pass 0 to switch buffering off (only allowed in binary mode), 1 to select
line buffering (only usable in text mode), and an integer > 1 to indicate
the size of a fixed-size chunk buffer. When no *buffering* argument is
given, the default buffering policy works as follows:
* Binary files are buffered in fixed-size chunks; the size of the buffer
is chosen using a heuristic trying to determine the underlying device's
"block size" and falling back on :attr:`DEFAULT_BUFFER_SIZE`.
On many systems, the buffer will typically be 4096 or 8192 bytes long.
* "Interactive" text files (files for which :meth:`isatty` returns True)
use line buffering. Other text files use the policy described above
for binary files.
*encoding* is the name of the encoding used to decode or encode the file.
This should only be used in text mode. The default encoding is platform