1. Differences Between Python 2 and 3 Feature \ Version Python 2 Python 3 print as a function print"abc" print(“abc”) Unified class Old-style and new-style classes New-style classes only Floating-point division 1/2=0 1/2=0.5 String formatting %, Format Format,% xrange replaces range xrange range long renamed to int Long,int Int Package imports Relative imports Absolute imports Source file encoding Ascii utf8 The official Python recommendation is strongly in favor of learning Python 3 directly, since Python 2 is only maintained through 2020.

1. Introduction to Hexo Hexo is a concise, efficient, open-source static blog generator built with Node.js. Hexo can render Markdown into static HTML files extremely quickly. Like Jekyll, Ghost, and Octopress, it can be used to create a blog. Hexo has the following advantages: It uses Node.js, so setting up the environment is simple.

1. Background In the course of Web development, migrating data between multiple environments (local, testing, and production) comes up often. This article mainly discusses the possible data migration paths involved in Django development, and seeks feasible methods for them. 2. Scenarios There are four data migration targets in total: the