PyPy

PyPy is an alternative version of the Python programming language's interpreter that runs Python code faster. It achieves this by using just-in-time (JIT) compilation, which dynamically translates Python code into faster machine code while the program runs. Unlike the standard Python interpreter (CPython), PyPy often executes programs more quickly and efficiently, especially those that involve a lot of computations. This can improve the performance of Python applications without requiring changes to the code itself. PyPy is popular for its speed benefits and compatibility with many Python projects.