Regular expression in Python won't match end of a string

Question

I\'m just learning Python, and I can\'t seem to figure out regular expressions.

r1 = re.compile(\"$.pdf\")
if r1.match(\"spam.pdf\"):
    print \'yes\'
else:
            


        

Answer 1

You've tried all the variations except the one that works. The $ goes at the end of the pattern. Also, you'll want to escape the period so it actually matches a period (usually it matches any character).

r1 = re.compile(r"\.pdf$")

However, an easier and clearer way to do this is using the string's .endswith() method:

if filename.endswith(".pdf"):
    # do something

That way you don't have to decipher the regular expression to understand what's going on.