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Merged revisions 70992,70995 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

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  r70992 | georg.brandl | 2009-04-01 16:00:55 -0500 (Wed, 01 Apr 2009) | 1 line

  #4572: add SEEK_* values as constants in io.py.
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  r70995 | benjamin.peterson | 2009-04-01 16:12:54 -0500 (Wed, 01 Apr 2009) | 1 line

  add seek constants to __all__
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This commit is contained in:
Benjamin Peterson 2009-04-01 21:22:20 +00:00
parent 1fd32a6731
commit 0e4caf4bd2
2 changed files with 16 additions and 4 deletions
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12
Doc/library/io.rst
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@ -270,12 +270,18 @@ I/O Base Classes
interpreted relative to the position indicated by *whence*. Values for
*whence* are:
* ``0`` -- start of the stream (the default); *offset* should be zero or positive
* ``1`` -- current stream position; *offset* may be negative
* ``2`` -- end of the stream; *offset* is usually negative
* :data:`SEEK_SET` or ``0`` -- start of the stream (the default);
*offset* should be zero or positive
* :data:`SEEK_CUR` or ``1`` -- current stream position; *offset* may
be negative
* :data:`SEEK_END` or ``2`` -- end of the stream; *offset* is usually
negative
Return the new absolute position.
.. versionadded:: 2.7
The ``SEEK_*`` constants
.. method:: seekable()
Return ``True`` if the stream supports random access. If ``False``,

8
Lib/io.py
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@ -52,7 +52,8 @@ __author__ = ("Guido van Rossum <guido@python.org>, "
__all__ = ["BlockingIOError", "open", "IOBase", "RawIOBase", "FileIO",
"BytesIO", "StringIO", "BufferedIOBase",
"BufferedReader", "BufferedWriter", "BufferedRWPair",
"BufferedRandom", "TextIOBase", "TextIOWrapper"]
"BufferedRandom", "TextIOBase", "TextIOWrapper",
"SEEK_SET", "SEEK_CUR", "SEEK_END"]
import _io
@ -65,6 +66,11 @@ from _io import (DEFAULT_BUFFER_SIZE, BlockingIOError, UnsupportedOperation,
OpenWrapper = _io.open # for compatibility with _pyio
# for seek()
SEEK_SET = 0
SEEK_CUR = 1
SEEK_END = 2
# Declaring ABCs in C is tricky so we do it here.
# Method descriptions and default implementations are inherited from the C
# version however.