Difference between revisions of "Python:Files"
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(Created page with "Category:Python ;glob.glob(filespec) :Return a list of files matching 'filespec'. Code example: <syntaxhighlight lang=python> import glob files = glob.glob(filespec) </sy...") |
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Line 27: | Line 27: | ||
for line in file: | for line in file: | ||
<codeblock> | <codeblock> | ||
+ | </syntaxhighlight> | ||
+ | |||
+ | ;f1.read(size) | ||
+ | :Return 'size' bytest from the file as string if size is omited the entire file is returned. | ||
+ | |||
+ | ;f1.readlines(size) | ||
+ | ;list(f1) | ||
+ | :Return ('size') lines from file as list. | ||
+ | |||
+ | Read through all files specified on the commandline. | ||
+ | If there are no files on the commandline read standard input | ||
+ | <syntaxhighlight lang=python> | ||
+ | import fileinput | ||
+ | |||
+ | for line in fileinput.input(): | ||
+ | <codeblock> | ||
+ | </syntaxhighlight> | ||
+ | |||
+ | ==Read from standard input== | ||
+ | |||
+ | |||
+ | Read from standard input | ||
+ | <syntaxhighlight lang=python> | ||
+ | import sys | ||
+ | |||
+ | for line in sys.stdin: | ||
+ | <codeblock> | ||
</syntaxhighlight> | </syntaxhighlight> |
Revision as of 21:32, 17 January 2018
- glob.glob(filespec)
- Return a list of files matching 'filespec'.
Code example:
import glob
files = glob.glob(filespec)
- open (filename,"r")
- open filname for read and return the filehandle. Use w for write.
Code example:
import os
if os.path.isfile(filename):
f1 = open (filename,"r")
- with open (filename,"r") as file
- Open filename for read and close at the end of the loop
Code example:
with open (filename,"r") as file:
for line in file:
<codeblock>
- f1.read(size)
- Return 'size' bytest from the file as string if size is omited the entire file is returned.
- f1.readlines(size)
- list(f1)
- Return ('size') lines from file as list.
Read through all files specified on the commandline. If there are no files on the commandline read standard input
import fileinput
for line in fileinput.input():
<codeblock>
Read from standard input
Read from standard input
import sys
for line in sys.stdin:
<codeblock>