Does Python have a string 'contains' substring method?

Question

I'm looking for a string.contains or string.indexof method in Python.

I want to do:

if not somestring.contains("blah"):    continue 

Answer 1

You can use the in operator:

if "blah" not in somestring:      continue 

Answer 2

If it's just a substring search you can use string.find("substring").

You do have to be a little careful with find, index, and in though, as they are substring searches. In other words, this:

s = "This be a string" if s.find("is") == -1:     print("No 'is' here!") else:     print("Found 'is' in the string.") 

It would print Found 'is' in the string. Similarly, if "is" in s: would evaluate to True. This may or may not be what you want.