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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 get_column_labels(command_name):
    '''return dictionary of column labels if available'''
    cmd = cmd_reverse_lookup(command_name)
    if cmd == 0:
        return {}
    labels = {}
    enum = mavutil.mavlink.enums['MAV_CMD'][cmd]
    for col in enum.param.keys():
        labels[col] = make_column_label(command_name, enum.param[col], "P%u" % col)
    return labels