[Tutor] File mode tests

[Lloyd Kvam]

On Thu, 2004-07-29 at 20:18, Bill Campbell wrote:
> I'm just getting my feet wet with python after programming primarily in
> perl since perl-3.something.  I've read the Harms and McDonald ``The Quick
> Python Book'', and O'Reilly's ``Learning Python'', but haven't been able to
> find python equivalents to these perl tests (lots of others in os.path, but
> not these :-).

import os
> 
> 	if ( -x path ) # is is executable
if os.access(path, os.X_OK):
> 	if ( -r path ) # is it readable
if os.access(path, os.R_OK):
> 
> 	if ( -w path ) # is it writeable
if os.access(path, os.W_OK):

http://docs.python.org/lib/os-file-dir.html

This is the relevant piece of documentation for the os module.  It is
more verbose than perl since Python offers these functions through a
module.

> 
> 
> I would love to find documentation, something like ``python for the perl
> hacker'' that would help in the transition.

Google may be able to help with that.  Otherwise browse through the
Library reference:

http://docs.python.org/lib/lib.html

> 
> Bill
> --
> INTERNET:   bill at Celestial.COM  Bill Campbell; Celestial Systems, Inc.
> UUCP:               camco!bill  PO Box 820; 6641 E. Mercer Way
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> URL: http://www.celestial.com/
> 
> ``Mechanical Engineers build weapons.  Civil Engineers build targets.''

Interesting observation.

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-- 

Lloyd Kvam
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