PYTHON

2. The mirror of the string vow is the string wov and the mirror image of wood is boow. The mirror of the string bed cannot be represented by a string because the letter e does not have a mirror in the alphabet. Write a function mirror() that takes a string and, if it has a mirror, returns its mirror image. If it does not have a mirror, return the string INVALID. Hint: use a dictionary with the mirrors in it. You can see how to mirror letters by looking at the last example below: >>> mirror('vow') 'wov' >>> mirror('wood') 'boow' >>> mirror('bed') 'INVALID' >>> mirror('pout') 'tuoq' >>> mirror( mirror('pout') ) 'pout' >>> [(c,mirror(c)) for c in 'abcdefghijklmnopqrstuvwxyz'] [('a', 'INVALID'), ('b', 'd'), ('c', 'INVALID'), ('d', 'b'), ('e', 'INVALID'), ('f', 'INVALID'), ('g', 'INVALID'), ('h', 'INVALID'), ('i', 'i'), ('j', 'INVALID'), ('k', 'INVALID'), ('l', 'l'), ('m', 'm'), ('n', 'n'), ('o', 'o'), ('p', 'q'), ('q', 'p'), ('r', 'INVALID'), ('s', 'INVALID'), ('t', 't'), ('u', 'u'), ('v', 'v'), ('w', 'w'), ('x', 'x'), ('y', 'INVALID'), ('z', 'INVALID')]