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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 op_canonicalize(op_name, parsed_op):
 """ Get the canonical representation of a parsed operation's data. Meant for backwards-compatibility """

    global CANONICALIZE_METHODS

    if op_name not in CANONICALIZE_METHODS:
        # no canonicalization needed
        return parsed_op
    else:
        return CANONICALIZE_METHODS[op_name](parsed_op)