Read and write Python files (2)

Little R yesterday because in the study of WebLogic loopholes there is no time to learn Python (well, this is an excuse, lazy, you can not like me.)   Keep learning every day). This progress is a bit slow.  Gee, it's okay, I'm still young, just 20 years old. Haha, funny joke.

Today we continue to learn the Python file read and write, and found an interesting code. The interesting code is at the end of this article.

This is a 1234.txt file.

The execution of this sentence returns 0.

And then:

Results:

Self-understanding of the role of code.

Now you can make a progress bar by introducing a few lines of code.  Everyone should have played a game, right? When entering, there will be a progress bar slowly increase, python a few words can achieve this function.

Source code: (The source code is rarely introduced)

Import Sys,time

For I in range (100):

Sys.stdout.write ("*")

Sys.stdout.flush ()

Time.sleep (0.1)

Read and write Python files (2)