using python Write a program that automatically breaks a shift cipher using the following simple heuristic: the letter that occurs most frequently in the ciphertext corresponds to plaintext 'e' (which, at 12.5% is the most frequent letter in English). Write a function simpleshiftbreak(ct) that given ciphertext ct, returns the key suggested by this heuristic. You can make use of the shift-cipher program shift.py we saw in class.

shift.py

def shift2(pt,k): 'plaintext pt, shift k' ptlst = encode(pt) ctlst = [(x+k) % 26 for x in ptlst] return decode(ctlst)