How can I get the Unix permission mask from a file? [duplicate]

Answer 1

os.access(path, mode) method returns True if access is allowed on path, False if not.

available modes are :

1. os.F_OK - test the existence of path.
2. os.R_OK - test the readability of path.
3. os.W_OK - test the writability of path.
4. os.X_OK - test if path can be executed.

for example, checking file /tmp/test.sh has execute permission

ls -l /tmp/temp.sh
-rw-r--r--  1 *  *  0 Mar  2 12:05 /tmp/temp.sh

os.access('/tmp/temp.sh',os.X_OK)
False

after changing the file permission to +x 
chmod +x /tmp/temp.sh

ls -l /tmp/temp.sh
-rwxr-xr-x  1 *  *  0 Mar  2 12:05 /tmp/temp.sh

os.access('/tmp/temp.sh',os.X_OK)
True