def unexpected_case(clas: Classifier, percept: list, percept_: list) -> Classifier:
"""
:rtype: Classifier
"""
assert (len(percept_) == cons.lenCondition), "Wrong leight"
assert (len(percept) == cons.lenCondition), "Wrong leight"
clas.q = clas.q - cons.beta * clas.q
clas.mark = percept_
for i in range(len(percept)):
if clas.effect[i] != cons.symbol:
if clas.effect[i] != percept_[i] or percept_[i] != percept[i]:
return None
child = Classifier(clas)
for i in range(len(percept)):
if clas.effect[i] == cons.symbol and percept_[i] != percept[i]:
child.condition[i] = percept_[i]
child.effect[i] = percept[i]
if clas.q < 0.5:
clas.q = 0.5
child.exp = 1
return child
