userchose = input(
" Hellow World! please Enter Letter(A-Z) or Digit(0- 9):> ").upper()
while True:
if userchose == 'A':
letter.A()
elif userchose == 'B':
letter.B()
elif userchose == 'C':
letter.C()
elif userchose == 'D':
letter.D()
elif userchose == 'E':
letter.E()
elif userchose == 'F':
letter.F()
elif userchose == 'G':
letter.G()
elif userchose == 'H':
letter.H()
elif userchose == 'I':
letter.I()
elif userchose == 'J':
letter.J()
elif userchose == 'K':
letter.K()
elif userchose == 'L':
letter.L()
elif userchose == 'M':
letter.M()
