Multiple value checks using 'in' operator (Python)

Question

if \'string1\' in line: ...

... works as expected but what if I need to check multiple strings like so:

if \'string1\' or \'string2         


        

Answer 1

or does not behave that way. 'string1' or 'string2' or 'string3' in line is equivalent to ('string1') or ('string2') or ('string3' in line), which will always return true (actually, 'string1').

To get the behavior you want, you can say if any(s in line for s in ('string1', 'string2', 'string3')):.