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PyPy is a reimplementation of Python in Python, using advanced techniques to try to attain better performance than CPython. Many years of hard work have finally paid off. Our speed results often beat CPython, ranging from being slightly slower, to speedups of up to 2x on real application code, to speedups of up to 10x on small benchmarks. How ...
The crazy thing about it is that you don’t need to rewrite the code. The only thing that needs to be done is to replace CPython with PyPy. It is important to know that PyPy supports most of the tools that are part of the “Python Echosystems”. Examples for that are pip (package manager) and virtualenv (Python’s virtual environment).
It interprets your Python code and does not compile any of it to machine code. (It does parse your Python code into a "compiled bytecode", but that bytecode is just a more compact representation of Python and still needs to be interpreted.) PyPy is a Just-In-Time Compiler, which means it can run a lot of Python code much faster than CPython can.
Aug 19, 2021 · that makes JIT compilers work much faster than the raw interpreters. PyPy also consumes lesser memory at run time and hence has an advantage over raw Python interpreters. You might want to understand the fact that while PyPy gives performance. gains and memory advantages, it is not always true. JIT compilers have.
Mar 16, 2024 · Choosing Between CPython and PyPy. For General Use: CPython is often the best choice due to its compatibility and the vast ecosystem of libraries and tools. For Performance-Sensitive Applications: PyPy can be a better choice if your application can benefit from JIT compilation, especially if it is long-running and computationally intensive.
On CPython 2.6 and 2.7 it works in a bit more cases, which are not supported by PyPy so far. (If needed, it could be supported, but then it will likely work in many more case on PyPy than on CPython 2.6/2.7.) In PyPy 3, __class__ attribute assignment between heaptypes and non heaptypes.
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Dec 12, 2021 · PyPy. PyPy is a Python implementation written in Python (specifically RPython) and is a replacement for CPython. PyPy's main utility is that it is really fast, in fact, it claims to be almost 5x faster than CPython. However, PyPy can run most Python code except for when the code depends on CPython extensions which results in either inability to ...
