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This article shows you how the Python programming language can solve common practical problems. It is concise and easy to understand, and can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Python programming language is a widely used computer language, but there are still many people do not know much about Python programming language. The following is mainly to introduce how Python programming language solves some practical problems. The following is the main description of the article.

Python programming language solves some practical problems

Python programming language is a concise and beautiful scripting language, and its many advantages make it easy to accomplish some tasks. This paper illustrates this point through several specific examples. Python is a concise and beautiful programming language, which has the characteristics of object-oriented, good ability to glue other languages and cross-platform. However, I think it is equally important that it is easy to learn and quick to write code.

In addition, Python provides a lot of speed and contains quite a lot of features, so as long as you have a viable idea, it will be easier to solve it with Python. The following examples stem from some of the practical problems I have encountered. With the help of Python, it is easy to solve these problems.

Automatically delete some files some software will automatically generate some backup files when working. For example, when I use Vim for text editing and Autocad for drawing, these programs will automatically generate some backup files. As the number of files grows, they have to be cleaned up at regular intervals. Of course, you can choose manual cleaning, but considering that these files are scattered in different directories, and the number is relatively large, so manual cleaning is still a bit troublesome.

I wrote a simple Python script to automate this task. The following code scans all directories under disk D and deletes the relevant backup files under the directory:

From os.path import walk, join, normpath

From os import chdir, remove

Def scan (arg, dirname, names)

For file in names:

1 if file [- 1:] = "~" or file [- 4:] = = ".bak":

2 files = normpath (join (dirname,file))

3 chdir (dirname)

4 print "deleting", files

5 remove (file)

6 print "done!"

If _ _ name__== "_ _ main__":

Path = chdir ('d:\)

7 walk (path, scan, 0)

A simple analysis and explanation of the above code:

The basic idea is to scan each directory with a script, judge every file under the directory (1 sentence), and delete the backup file generated by a program (5 sentences). The backup file extension has certain characteristics, such as the last character of the Vim backup file is the tilde ~, while the backup of Autocad ends with bak. These features are the basis for judging whether a file should be deleted.

7-sentence walk (path, scan, 0) is a built-in function in the Python programming language. Used to traverse the directory path. Obviously, with the help of this function provided by Python, the work of scanning the directory is done more easily, thus making programming much less difficult.

The last point to note is that when deleting a file, you should know its absolute path and do it in the directory where the file is located, otherwise Python will prompt you that the file to be processed cannot be found. Two sentences get the absolute path to the file, and three sentences chdir (dirname) change the current directory to the directory where you want to delete the file.

The above is how the Python programming language solves common practical problems. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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