char=input('enter character:')
lis=['a','e','i','o','u']
if char.lower() in lis:
    print(char,'is vowel')
else:
    print(char,'is consonant')

(OR)

char=input('enter character:')
if char=='a' or char=='e' or char=='i' or char=='o' or char=='u' or char=='A' or char=='E' or char=='I' or char=='O' or char=='U':
    print(char,'is vowel')
else:
    print(char,'is consonant')