<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _subset(subset, superset):
 """True if subset is a subset of superset. :param dict subset: subset to compare. :param dict superset: superset to compare. :return: True iif all pairs (key, value) of subset are in superset. :rtype: bool """


    result = True
    for k in subset:
        result = k in superset and subset[k] == superset[k]
        if not result:
            break
    return result