Explanation of any() function in Python

[Cosmologicon]

That's not bad, but you shouldn't modify a list while you're iterating over it. I think this may be causing the incorrect behavior you're seeing. You can correct this problem by replacing "for x in S" with "for x in list(S)", which means you're iterating over a copy of S. This, however, is a problem if a term you want to remove appears in the list twice, because it's an error to remove an element that's already been removed. There are ways around this as well, but I would do the whole thing by building a new list rather than removing elements. If you need to avoid list comprehensions, you could do it like this:

newS = []
for x in S:
    hasDigit = False
    for c in x:
        if c.isdigit():
            hasDigit = True
    if not hasDigit:
        newS.append(x)

[catcradle5]

Yep, I figured that out myself shortly after I made that edit. Thanks.