4.2. Kindergarten Cipher

Jess is a kindergarten teacher who taught her students the letters just recently. Now, the students can read, and they love to play with letters. One day, she noticed that one of the students used numbers instead of some letters, and she wanted to decipher what the students wrote. So, after finding which number corresponds to which letter, she decided to write a Python function to solve them.

Write a function named decipher that takes two arguments, the ciphered text and a solution list, and return the deciphered text.

Hint: You can use a string method for the replacement of a character in a string.

Sample I/O:

>>> decipher("H45k3ll 15 4 g3n3r4l-purpo53, 5t4t1c4lly typ3d, pur3ly funct1on4l progr4mm1ng l4ngu4g3 w1th typ3 1nf3r3nc3 4nd l4zy 3v4lu4t1on.", [("3", "e"), ("4", "a"), ("5", "s"), ("1", "i")])
Haskell is a general-purpose, statically typed, purely functional programming language with type inference and lazy evaluation.

>>> decipher("APL (nam3d af73r 7h3 b00k A Pr0gramming Languag3) is a pr0gramming languag3 d3v3l0p3d by K3nn37h 3. Iv3rs0n. I7s c3n7ral da7a7yp3 is 7h3 mul7idim3nsi0nal array.", [("7", "t"), ("3", "e"), ("0", "o")])
APL (named after the book A Programming Language) is a programming language developed by Kenneth e. Iverson. Its central datatype is the multidimensional array.

Show the Answer

def decipher(text, pattern_list):
    for pattern in pattern_list:
        text = text.replace(pattern[0], pattern[1])
    return text