Python

7.5.5: Contains a Vowel

Ask the user for a string of all lowercase letters. Tell them whether or not the string contains a lowercase vowel somewhere using the in keyword. Heres what your program should look like when you run it: Enter a string of lowercase letters: abcde Contains a lowercase vowel! Or: Enter a string of lowercase letters: bcd Doesn't contain a lowercase vowel.

Here's what I've written. I'm getting an error on line 9 that says: NameError: name 'vowels' is not defined on line 9

string = input("Enter a string of lowercase letters: ") def vowel (vowels): vowel = "a" vowel = "e" vowel = "i" vowel = "o" vowel = "u"

if vowel(vowels) in string: print ("Contains a lowercase vowel!") else: print ("Doesn't contain a lowercase vowel.")