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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def crossover(m, f):
 """Produces an offspring from two Machines, whose code is a combination of the two."""

    i = random.randint(0, len(m.code))
    j = random.randint(0, len(f.code))
    return m.code[:i] + f.code[j:]