Python is widely used for big data analysis, mass data computing and machine learning because it has essential mathematical calculation libraries like NumPy and Pandas that is also based on NumPy. NumPy is written in C language, so that it runs extremely fast and meets the speed requirements in big data analysis. Install NumPy You could use pip in the console to install NumPy if you have installed Python 3, no matter the operation system is Windows, Linux or MacOS.