def myFunc(s):
    if s[0] == 'a':
        print("It's an A!")
    elif s[0] == 'b':
        print("It's an B")
    else:
        print("It's neither A or B!")

if __name__ == '__main__':
    myFunc("Try1")
    myFunc("aTry1")
    myFunc("bTry1")