python test multiple conditions with or operator

Question

How can I test if one of the multiple items exist in a list using or?

I tried:

data = [[1,'a',4,],['a','b','c'],['c',3,5]...]
for i,val enumerate(data):
    if 'a' or 'b' or 'c' in val:
        data.pop(i)

But it removes the first row only

https://stackoverflow.com/questions/16579085/python-verifying-if-one-list-is-a-subset-of-the-other is probably a better duplicate. — Code-Apprentice, Feb 04 '18 at 16:15
The question that ayhan gave as a duplicate is exactly your problem and shows how to solve it directly. The one I linked provides a better solution without using the `or` operator. — Code-Apprentice, Feb 04 '18 at 16:17
The mistake in `x or y or z == 0` is the same as the mistake in `'a' or 'b' or 'c' in val`, so yeah, this is a duplicate. Read through the answers and you'll see why. — ayhan, Feb 04 '18 at 16:19
Somehow everyday there are at least two people who ask the very same question :( — Willem Van Onsem, Feb 04 '18 at 16:23

score 0 · Answer 1 · answered Feb 04 '18 at 16:13

You must test the conditions one at a time:

if 'a' in val or 'b' in val or 'c' in val:

Alternatively, you create two lists, convert them to sets, and test if the first list is a subset of another list. See Python - verifying if one list is a subset of the other for more details.

score 0 · Answer 2 · edited Feb 04 '18 at 18:39

0

Try this:

if val in ['a','b','c']:

edited Feb 04 '18 at 18:39

Kos

answered Feb 04 '18 at 16:13

Artier

2 Answers2