Every_other_Letter

def to_weird_case(string):
    result_string = []
    index = 0
    for letter in string:
       if(index%2 != 0):
           new_string = letter.lower()
           result_string.append(new_string)
           index=index + 1

       elif(index%2 == 0):
           new_string = letter.upper()
           result_string.append(new_string)
           index=index + 1
       else:
           pass
    return ''.join(result_string)