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                ### 第1關 :初識繼承 ``` class fish(animalstest.animals): ``` ### 第2關 :覆蓋方法 ``` def getPoint(self): length_one=abs(self.y)-abs(self.x) length_two=abs(self.z)-abs(self.h) ``` ### 第3關 :從標準類派生 ``` `return super(ChangeAbs,cls).__new__(cls,abs(val))` `return sorted(super( SortedKeyDict, self).keys() )` ``` ### 第4關 :多重繼承 ``` `class C(A,B):` `class D(A,B):` ```
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