Vowel or Consonant Python

Following code will identify that entered character is a vowel or consonant.

Code::

def vowel(str):
    if(str=='a' or str=='e' or str=='i' or str=='o' or str=='u' or str=='A' or str=='E' or str=='I' or str=='O' or str=='U'):
        print("Vowel")
    else:
        print("Consonant")
while True:                                                #for only one character 
    
    a=input("Enter a Character: ")
    if(len(a)==1):
        break
    else:
        print("Try Again!!")
        continue
vowel(a)
    

Output: