file access in python|| os.access||Python Tutorial #19 || Python Tutorial for Beginners

Veröffentlicht am: 06 Dezember 2017
auf dem Kanal: Code4You

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This is my 19th python tutorial for beginners -
file access in python|| os.access||Python Tutorial #19 || Python Tutorial for Beginners

os.access(path, mode)
Use the real uid/gid to test for access to path. Note that most operations will use the effective uid/gid, therefore this routine can be used in a suid/sgid environment to test if the invoking user has the specified access to path. mode should be F_OK to test the existence of path, or it can be the inclusive OR of one or more of R_OK, W_OK, and X_OK to test permissions. Return True if access is allowed, False if not. See the Unix man page access(2) for more information.

os.F_OK
Value to pass as the mode parameter of access() to test the existence of path.
os.R_OK
Value to include in the mode parameter of access() to test the readability of path.
os.W_OK
Value to include in the mode parameter of access() to test the writability of path.
os.X_OK
Value to include in the mode parameter of access() to determine if path can be executed.

Links :
For python os.walk. Please check    • python os.walk|os.system in python ||Pytho...
pass argument in python :    • pass argument in python|pass parameter in ...
For reading and writing files :    • Reading and Writing into File in python|re...
Creating temporary files :    • creating temporary files and directories i...

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This module provides a portable way of using operating system dependent functionality.

===Code===
import os
os.access(path, mode)

file_name = "file.txt"

if os.access(file_name, os.X_OK):
f1 = open(file_name, 'w')
f1.write('something\n')
f1.close()
else:
print "You don't have read permission"

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