[Tutor] file.readlines() error
alan.gauld@bt.com
alan.gauld@bt.com
Fri, 11 Oct 2002 08:59:10 +0100
> See underneath the code for the error...
>
> def tagfinger():
> import sys, string, os, os.path, glob, re
....
> print "The pathname you have chosen is: ",path_in
> print ""
> from os import chdir
Warning this is ILLEGAL CODE in Python.
You are not supposed to use fom X import Y inside a function.
In Python 2.x it will spit out a warning or evben an error.
But even in previous versions it is an error.
See the python idioms paper in the topics section of
the python web site....
> rtfile=file(answer, 'r')
> print '...Reading...',answer
> rtfile=file.readlines() ### <<<------ Error because I
It looks like you are getting some kind of conflict between
the os and builtin file handling functions. This might be
a bad result of the from/import above. Try taking out
(or moving it to global level) the from/import and see
what happens.
> TypeError: descriptor 'readlines' of 'file' object needs an argument
My theory is based on the word 'descriptor'...
Alan g.
Author of the 'Learning to Program' web site
http://www.freenetpages.co.uk/hp/alan.gauld