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M\¬Qc @ sf d Z d d l Z e j d e d d d d YZ d d d Z d Z d
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Z d Z d Z d S( s: Extended file operations available in POSIX.
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f = posixfile.open(filename, [mode, [bufsize]])
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will create a new posixfile object
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f = posixfile.fileopen(fileobject)
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will create a posixfile object from a builtin file object
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f.file()
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will return the original builtin file object
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f.dup()
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will return a new file object based on a new filedescriptor
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f.dup2(fd)
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will return a new file object based on the given filedescriptor
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f.flags(mode)
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will turn on the associated flag (merge)
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mode can contain the following characters:
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(character representing a flag)
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a append only flag
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c close on exec flag
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n no delay flag
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s synchronization flag
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(modifiers)
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! turn flags 'off' instead of default 'on'
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= copy flags 'as is' instead of default 'merge'
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? return a string in which the characters represent the flags
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that are set
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note: - the '!' and '=' modifiers are mutually exclusive.
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- the '?' modifier will return the status of the flags after they
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have been changed by other characters in the mode string
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f.lock(mode [, len [, start [, whence]]])
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will (un)lock a region
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mode can contain the following characters:
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(character representing type of lock)
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u unlock
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r read lock
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w write lock
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(modifiers)
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| wait until the lock can be granted
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? return the first lock conflicting with the requested lock
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or 'None' if there is no conflict. The lock returned is in the
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format (mode, len, start, whence, pid) where mode is a
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character representing the type of lock ('r' or 'w')
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note: - the '?' modifier prevents a region from being locked; it is
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query only
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iÿÿÿÿNsI The posixfile module is deprecated; fcntl.lockf() provides better lockingi t _posixfile_c B sh e Z d Z d d g Z d Z d d d Z d Z d Z d Z d
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