python - Find matching words in a list and a string

Question

I am writing some code in Python and I want to check if a list of words is in a long string. I know I could iterate through it multiple times and that may be the same thing but I wanted tp see if there is a faster way to do it. What I am currently doing is this:

    all_text = 'some rather long string'
    if "motorcycle" in all_text or 'bike' in all_text or 'cycle' in all_text or 'dirtbike' in all_text:
        print 'found one of em'

but what I want to do is this:

keyword_list = ['motorcycle', 'bike', 'cycle', 'dirtbike']
if item in keyword_list in all_text:
            print 'found one of em'

Is there anyway to do this efficiently? I realize I could do:

keyword_list = ['motorcycle', 'bike', 'cycle', 'dirtbike']
for item in keyword_list:
      if item in all_text:
            print 'found one of em'

But it seems like there would be a better way once the keyword list becomes long.

Answer 1

You still have to check them all at least until one is found to be in the text, but it can be more concise:

keyword_list = ['motorcycle', 'bike', 'cycle', 'dirtbike']

if any(word in all_text for word in keyword_list):
    print 'found one of em'