[Tutor] Adjusting a file

[shey crompton]

Thanks Alan. The outf line should have been writing to Menu.tmp.  When I
changed the suffix to .tmp everything ran correctly.

One of these days I'll learn how to read! :-)

 -----Original Message-----
From: 	alan.gauld@bt.com [mailto:alan.gauld@bt.com] 
Sent:	26 August 2002 17:13
To:	shey@argonaut.com; tutor@python.org
Subject:	RE: [Tutor] Adjusting a file

> problem, when I run the script below, I get a syntax error 
> the line after the except statement.

Not sure what that is but I think you have another problem...

> import os, time
> 
> try:
> 	menu=open('C:/Python22/Menu.txt','r')
> 	outf=open('C:/Python22/Menu.txt','w')

I think this one should be "Menu.tmp" - otherwise you'll 
stamp all over the file you are reading - not a good idea!

> 	os.rename('C:/Python22/Menu.txt', 'C:/Python22/Menu.bak')
> 	os.rename('C:/Python22/Menu.tmp', 'C:/Python22/Menu.txt')

And this line only makes sense if your new ffile is Menu.tmp...

> except:
> 	print 'ERROR: Failed to create new menu'

Hmm, The except could mean several things aside from that 
but I guess it illustrates the idea OK. I can't see anything 
that would cause a syntax error...

Alan g.
Author of the 'Learning to Program' web site
http://www.freenetpages.co.uk/hp/alan.gauld