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From Python:
>>> import os
>>> s = os.stat( '/etc/termcap')
>>> print( oct(s.st_mode) )
**0o100444**
When I check through Bash:
$ stat -f "%p %N" /etc/termcap
**120755** /etc/termcap
Why does this return a different result?
643
To check whether current process has permissions on a certain file, we could use os. access which is based on the access system call. It uses real-uid instead of the effective uid of the calling process.
To change file permissions, you can use os. chmod(). You can bitwise OR the following options to set the permissions the way you want. These values come from the stat package: Python stat package documentation.
This is because your /etc/termcap is a symlink. Let me demonstrate this to you:
Bash:
$ touch bar
$ ln -s bar foo
$ stat -f "%p %N" foo
120755 foo
$ stat -f "%p %N" bar
100644 bar
Python:
>>> import os
>>> oct(os.stat('foo').st_mode)
'0100644'
>>> oct(os.stat('bar').st_mode)
'0100644'
>>> oct(os.lstat('foo').st_mode)
'0120755'
>>> oct(os.lstat('bar').st_mode)
'0100644'
Conclusion, use os.lstat instead of os.stat
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