Detailed introduction to two-dimensional lists

Post a code written when doing data cleaning. When doing data processing, the original file data needs to be converted into a certain format during processing. Original file data: 123.txt1,3,4 2,3,5 1,2,3,5 2,5 Use Python to convert into a two-dimensional list: #!/usr/bin/env python #coding=utf-8 def loadDataSet(): file = open("123.txt", "r") List_row = file.readlines() ​ list_source =&

1. How to use python to convert file data into a two-dimensional list

##Introduction: When python does data processing, the original file data needs to be converted into a certain format during processing.

2. Use python to convert the file Introduction to the method of converting data into a two-dimensional list

#Introduction: This article describes the use of python to convert file data Introduction to the method of converting into a two-dimensional list

3.

How to obtain the composition of sub-area elements in a two-dimensional list in Python

Introduction: This article mainly introduces how to obtain the composition of sub-region elements in a two-dimensional list in Python. The article gives a detailed introduction and examples. I believe that the code has certain reference value for everyone's understanding and learning. Friends in need can take a look below.

[Related Q&A recommendations]:

How should I optimize my python crawler code?

What is the problem with assigning values ​​to the current traversed object in the for statement in python?

Data structure - python-How to convert a two-dimensional list whose elements are strings into a two-dimensional list whose elements are integers?

python3.5 - How should I optimize my python crawler code?

How should I optimize my python crawler code?

The above is the detailed content of Detailed introduction to two-dimensional lists. For more information, please follow other related articles on the PHP Chinese website!