How to override the operator in Python

Question

What is the name of the method to override the    operator  subscript notation  for a class in Python

User · Answer

You are looking for the   getitem   method  See http   docs python org reference datamodel html  section 3 4 6

User · Answer

You need to use the   getitem   method   class MyClass      def   getitem   self  key           return key   2  myobj   MyClass   myobj 3   Output  6   And if you re going to be setting values you ll need to implement the   setitem   method too  otherwise this will happen    gt  gt  gt  myobj 5    1 Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt  AttributeError  MyClass instance has no attribute    setitem

User · Answer

To fully overload it you also need to implement the   setitem  and   delitem   methods   edit  I almost forgot    if you want to completely emulate a list  you also need   getslice      setslice   and   delslice     There are all documented in http   docs python org reference datamodel html

[python] How to override the [] operator in Python?

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