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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 cut_oid(self,full_oid):
 		""" 		Remove the base OID from the given string. 		'28.12' 		"""

		if not full_oid.startswith(self.base_oid.rstrip('.')):
			return None
		else:
			return full_oid[len(self.base_oid):]