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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 replace(cls, obj, field, value, state):
 """ This is method for replace operation. It is separated to provide a possibility to easily override it in your Parameters. Args: obj (object):
 an instance to change. field (str):
 field name value (str):
 new value state (dict):
 inter-operations state storage Returns: processing_status (bool):
 True """

        if not hasattr(obj, field):
            raise ValidationError("Field '%s' does not exist, so it cannot be patched" % field)
        setattr(obj, field, value)
        return True