What is PyPy? Faster Python without pain
Python has earned a reputation for being powerful, flexible, and easy to work with. These virtues have led to its use in a huge and growing variety of applications, workflows, and fields. But the design of the language—its interpreted nature, its runtime dynamism—means that Python has always been an order of magnitude slower than machine-native languages like C or C++.
Over the years, developers have come up with a variety of workarounds for Python’s speed limitations. For instance, you could write performance-intensive tasks in C and wrap it with Python; many machine learning libraries do exactly this. Or you could use Cython, a project that lets you sprinkle Python code with runtime type information that allows it to be compiled to C.