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# objspace.usemodules.__pypy__

- name: __pypy__
- description: use module __pypy__
- command-line: –withmod-__pypy__
- command-line for negation: –withoutmod-__pypy__
- option type: boolean option
- default: True

Use the ‘__pypy__’ module. This module is expected to be working and is included by default. It contains special PyPy-specific functionality. For example most of the special functions described in the object space proxies document are in the module. See the __pypy__ module documentation for more details.

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