scipy.integrate : For numerical integration (quadrature) and solving differential equations (ODE/PDE).

This is arguably the closest modern equivalent to Numerical Recipes for Python. The official Scipy Lecture Notes are available as a single PDF and cover everything from basic array operations to advanced optimization.

: For production-level scientific computing, the Python community largely uses

If you find a classic PDF (Fortran/C), use this conversion mental map:

The core series, written by Press, Teukolsky, Vetterling, and Flannery, has not been rewritten natively in Python. The current official status is: NR3 in C++