Yeah i remember that too - there is a answer in the scipy FAQ - https://www.scipy.org/scipylib/faq.html#how-can-scipy-be-fast-if-it-is-written-in-an-interprete

Yeah i remember that too - there is a answer in the scipy FAQ - https://www.scipy.org/scipylib/faq.html#how-can-scipy-be-fast-if-it-is-written-in-an-interpreted-language-like-python https://www.scipy.org/scipylib/faq.html#how-can-scipy-be-fas... "Actually, the time-critical loops are usually implemented in C or Fortran. "