<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def query(self, base, filterstr, attrlist=None):
 		""" wrapper to search_s """

		return self.conn.search_s(base, ldap.SCOPE_SUBTREE, filterstr, attrlist)