# This function doesn't work because strings are immutable!
def remove_i_broken(s):
    '''Remove all instances of the letter i from the string s.'''

    while s.count("i") > 0:        # while there are more i's to remove
        position = s.find("i")     # find the next i
        s = s[0:position] + s[position + 1:]
        
if __name__ == "__main__":
    text = "Will this work?"
    print text
    remove_i_broken(text)
    print text,"should be","Wll ths work?"