Write a function decode_string() that gets a string as a parameter -so called encrypted string-, decodes via the dictionary given below, and returns the decoded string. codes = {"A": "E", "B": "X", "C":"A", "F": "D", "K": "L", "N":"T", "S": "M", "X":"R", "Z":"S"} If a char is not in the dictionary, then decode it as "?". Write Python statements that test your function as seen in sample run below. example output: Please enter a string to decode: ZARXAN Decrypted text: SE?RET

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