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3. Built-in Constants

A small number of constants live in the built-in namespace. They are:

False​

The false value of the bool type. Assignments toFalseare illegal and raise a SyntaxError.

True​

The true value of the bool type. Assignments toTrueare illegal and raise a SyntaxError.

None​

The sole value of the typeNoneType.Noneis frequently used to represent the absence of a value, as when default arguments are not passed to a function. Assignments toNoneare illegal and raise a SyntaxError.

Not Implemented​

Ellipsis (...)​

debug​

Constants added with site module-

quit(code=None)​

exit(code=None)​

credits​

license​