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PyPy: Python in Python Implementation
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Welcome to PyPy!

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PyPy is an interpreter that implements the Python programming language, based
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on the RPython compiler framework for dynamic language implementations.
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The home page for the interpreter is:
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    https://pypy.org/
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If you want to help developing PyPy, this documentation might help you:
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    https://doc.pypy.org/
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More documentation about the RPython framework can be found here:
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    https://rpython.readthedocs.io/
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The source for the documentation is in the pypy/doc directory.
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Using PyPy instead of CPython
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Please read the information at https://pypy.org/ to find the correct way to
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download and use PyPy as an alternative to CPython. 
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Building
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--------
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Building PyPy is not the recommended way to obtain the PyPy alternative python
interpreter. It is time-consuming and requires significant computing resources.
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More information can be found here:
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    https://doc.pypy.org/en/latest/build.html
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Enjoy and send us feedback!
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    the pypy-dev team <pypy-dev@python.org>