Foreword In Numpy, array is used to represent general-purpose N-dimensional arrays, and matrix is used specifically for linear algebra calculations. Both two-dimensional array and matrix can be used to represent matrices, but there are some differences between the two when multiplication is performed. ...
Foreword In data science, we often need to deal with a large amount of data to process, calculate and analyze the data. In order to efficiently process various data, we often import Python packages for use to reduce Complex code during data processing. ...
Basic understanding of the function A function is a subroutine in a program. The concept is somewhat similar to a mathematical function, which is responsible for handling a function in the code. ...
Foreword SQL is short for Structured Query Language, pronounced S.Q.L or sequel. Chinese is called Structured Query Language. ...
I adopted Mimi from Changhua!...