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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 altz_to_utctz_str(altz):
 """As above, but inverses the operation, returning a string that can be used in commit objects"""

    utci = -1 * int((float(altz) / 3600) * 100)
    utcs = str(abs(utci))
    utcs = "0" * (4 - len(utcs)) + utcs
    prefix = (utci < 0 and '-') or '+'
    return prefix + utcs