lowercase = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]
uppercase = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]



example= "Hello, me"
upper_string= " "
i=0
#search through list of lowercade letters
for char in example:
    for i in range(len(lowercase)):
        lowerletter = lowercasep[i]
        if lowerletter == char:
        uppercase[i]

        



#indeces need to be intergers


#### new example (subistituting)

message= ' you shall NOT pass'

upcased= ''



for char in message:
    letter = char
    if char == 'a':
        letter: 'A'
    elif
    upcased = upcased + char
print upcased