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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 parse_attribute_map(filenames):
 """ Expects a file with each line being composed of the oid for the attribute exactly one space, a user friendly name of the attribute and then the type specification of the name. :param filenames: List of filenames on mapfiles. :return: A 2-tuple, one dictionary with the oid as keys and the friendly names as values, the other one the other way around. """

    forward = {}
    backward = {}
    for filename in filenames:
        with open(filename) as fp:
            for line in fp:
                (name, friendly_name, name_format) = line.strip().split()
                forward[(name, name_format)] = friendly_name
                backward[friendly_name] = (name, name_format)

    return forward, backward