Deleting from a list

[bvdpoel at uniserve.com]

Does python have a notion as to where the current item in a list is? I
have something like:

	for l in lines:
		if something ...
		if something else:
			delete l from list

Of course, this doesn't work. So, I tried:

	for i in len(lines):
		l=lines[i]
		...
		if ...:
			lines.pop(i)

and this causes problems since 'i' can now point to out of range lines.

I ired:

	for l in lines:
		if...:
			lines.remove(l)

But, this buggers the sequence. If you have [1,2,3,6,6,6,7] and delete
on the condition l==6, you only delete 2 '6's, not all 3.

So, finally, I did:

	for i in len(lines)
		l=lines(i)
		...
		if ..:
			lines[i]=None

	while(lines.count(None):
		lines.remove(None)


My question: Is there a cleaner way to do all this? Having 2 loops seems
to be ugly.

		

-- 
Bob van der Poel ** Wynndel, British Columbia, CANADA **
EMAIL: bvdpoel at uniserve.com
WWW:   http://users.uniserve.com/~bvdpoel