How to implement a progress bar in python

This article mainly introduces python how to achieve a progress bar, the article is very detailed, has a certain reference value, interested friends must read it!

Implement a progress bar from time import sleepdef progress (percent=0, width=30): left = width * percent / / 100right = width-left print ('\ r [','#'* left,'* right,']', f' {percent:.0f}%', sep='', end='', flush=True) for i in range: progress (I) sleep

Display effect

The print in the above code has several useful parameters. The role of sep is what is the delimiter. The default is a space. Here, it is set to an empty string to make each character more compact. What is the end of the end parameter? the default is the enter newline character. Here, in order to achieve the effect of the progress bar, it is also set to an empty string. There is also the last parameter flush, which is mainly used to refresh. The default is flush = False. If it is not refreshed, the contents of print to f will be stored in memory first; when flush = True, it will immediately refresh and output the contents.

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