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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 _replacer(x):
 """Replace a number with its hexadecimal representation. Used to tag temporary variables with their calling scope's id. """

    # get the hex repr of the binary char and remove 0x and pad by pad_size
    # zeros
    try:
        hexin = ord(x)
    except TypeError:
        # bytes literals masquerade as ints when iterating in py3
        hexin = x

    return hex(hexin)