ó
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d g Z d a d Z d d d d d d d Z d Z d Z d Z
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d Z d Z d Z d Z d Z d d d YZ d Z d Z d Z e d k rò e n d S(! s5 Helper class to quickly write a loop over all standard input files.
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|
Typical use is:
|
|
import fileinput
|
for line in fileinput.input():
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process(line)
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This iterates over the lines of all files listed in sys.argv[1:],
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defaulting to sys.stdin if the list is empty. If a filename is '-' it
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is also replaced by sys.stdin. To specify an alternative list of
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filenames, pass it as the argument to input(). A single file name is
|
also allowed.
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Functions filename(), lineno() return the filename and cumulative line
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number of the line that has just been read; filelineno() returns its
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line number in the current file; isfirstline() returns true iff the
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line just read is the first line of its file; isstdin() returns true
|
iff the line was read from sys.stdin. Function nextfile() closes the
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current file so that the next iteration will read the first line from
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the next file (if any); lines not read from the file will not count
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towards the cumulative line count; the filename is not changed until
|
after the first line of the next file has been read. Function close()
|
closes the sequence.
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Before any lines have been read, filename() returns None and both line
|
numbers are zero; nextfile() has no effect. After all lines have been
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read, filename() and the line number functions return the values
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pertaining to the last line read; nextfile() has no effect.
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All files are opened in text mode by default, you can override this by
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setting the mode parameter to input() or FileInput.__init__().
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If an I/O error occurs during opening or reading a file, the IOError
|
exception is raised.
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If sys.stdin is used more than once, the second and further use will
|
return no lines, except perhaps for interactive use, or if it has been
|
explicitly reset (e.g. using sys.stdin.seek(0)).
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|
Empty files are opened and immediately closed; the only time their
|
presence in the list of filenames is noticeable at all is when the
|
last file opened is empty.
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It is possible that the last line of a file doesn't end in a newline
|
character; otherwise lines are returned including the trailing
|
newline.
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Class FileInput is the implementation; its methods filename(),
|
lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close()
|
correspond to the functions in the module. In addition it has a
|
readline() method which returns the next input line, and a
|
__getitem__() method which implements the sequence behavior. The
|
sequence must be accessed in strictly sequential order; sequence
|
access and readline() cannot be mixed.
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Optional in-place filtering: if the keyword argument inplace=1 is
|
passed to input() or to the FileInput constructor, the file is moved
|
to a backup file and standard output is directed to the input file.
|
This makes it possible to write a filter that rewrites its input file
|
in place. If the keyword argument backup=".<some extension>" is also
|
given, it specifies the extension for the backup file, and the backup
|
file remains around; by default, the extension is ".bak" and it is
|
deleted when the output file is closed. In-place filtering is
|
disabled when standard input is read. XXX The current implementation
|
does not work for MS-DOS 8+3 filesystems.
|
|
Performance: this module is unfortunately one of the slower ways of
|
processing large numbers of input lines. Nevertheless, a significant
|
speed-up has been obtained by using readlines(bufsize) instead of
|
readline(). A new keyword argument, bufsize=N, is present on the
|
input() function and the FileInput() class to override the default
|
buffer size.
|
|
XXX Possible additions:
|
|
- optional getopt argument processing
|
- isatty()
|
- read(), read(size), even readlines()
|
|
iÿÿÿÿNt inputt closet nextfilet filenamet linenot
|
filelinenot isfirstlinet isstdint FileInputi i i t t rc C s: t r t j r t d n t | | | | | | a t S( sR input([files[, inplace[, backup[, mode[, openhook]]]]])
|
|
Create an instance of the FileInput class. The instance will be used
|
as global state for the functions of this module, and is also returned
|
to use during iteration. The parameters to this function will be passed
|
along to the constructor of the FileInput class.
|
s input() already active( t _statet _filet RuntimeErrorR ( t filest inplacet backupt bufsizet modet openhook( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR [ s
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Close the current file so that the next iteration will read the first
|
line from the next file (if any); lines not read from the file will
|
not count towards the cumulative line count. The filename is not
|
changed until after the first line of the next file has been read.
|
Before the first line has been read, this function has no effect;
|
it cannot be used to skip the first file. After the last line of the
|
last file has been read, this function has no effect.
|
s no active input()( R R R ( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR r s
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Return the name of the file currently being read.
|
Before the first line has been read, returns None.
|
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Return the cumulative line number of the line that has just been read.
|
Before the first line has been read, returns 0. After the last line
|
of the last file has been read, returns the line number of that line.
|
s no active input()( R R R ( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR s c C s t s t d n t j S( s×
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Return the line number in the current file. Before the first line
|
has been read, returns 0. After the last line of the last file has
|
been read, returns the line number of that line within the file.
|
s no active input()( R R R ( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR s c C s t s t d n t j S( sg
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Return the file number of the current file. When no file is currently
|
opened, returns -1.
|
s no active input()( R R t fileno( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR s c C s t s t d n t j S( se
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Returns true the line just read is the first line of its file,
|
otherwise returns false.
|
s no active input()( R R R ( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR ¦ s c C s t s t d n t j S( s]
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Returns true if the last line was read from sys.stdin,
|
otherwise returns false.
|
s no active input()( R R R ( ( ( sQ /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/fileinput.pyR ¯ s c B s e Z d Z d d d d d d d Z d Z d Z d Z d Z d Z d
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Z
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d Z d Z d Z d Z d Z d Z d Z RS( s8 class FileInput([files[, inplace[, backup[, mode[, openhook]]]]])
|
|
Class FileInput is the implementation of the module; its methods
|
filename(), lineno(), fileline(), isfirstline(), isstdin(), fileno(),
|
nextfile() and close() correspond to the functions of the same name
|
in the module.
|
In addition it has a readline() method which returns the next
|
input line, and a __getitem__() method which implements the
|
sequence behavior. The sequence must be accessed in strictly
|
sequential order; random access and readline() cannot be mixed.
|
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