python: class override “is” behavior

Question

I\'m writing a class which encapsulates any arbitrary object, including simple types. I want the \"is\" keyword to operate on the encapsulated value, such as this behavior:<

Answer 1

No. is, and, and or cannot be overloaded.

Indeed. I believe that keywords are reserved and cannot be overloaded or changed.

See: http://docs.python.org/2/reference/lexical_analysis.html#keywords

"The following identifiers are used as reserved words, or keywords of the language, and cannot be used as ordinary identifiers."

The list is: ['and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'exec', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'not', 'or', 'pass', 'print', 'raise', 'return', 'try', 'while', 'with', 'yield']

This list can be viewed through the command

keyword.kwlist

(Don't forget to import keyword first)

Also:

keyword.iskeyword('is')

Returns True

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Update:

My answer was bad and I should feel bad.

I've messed with del myself. I don't know why I didn't notice that...

2nd try:

The following documentation provides a full list of customizable behavior on classes. This includes all the methods for overriding and overloading operators. 'is' is not included.

http://docs.python.org/2/reference/datamodel.html#special-method-names

Best I can do.