How to use python underscore

This article will explain in detail how to use python underlining for you. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

1. Called as one of the magic methods, it calculates the name of the current module.

In Python, _ _ name__ is a built-in variable that you must use when writing main functions.

If _ _ name__ = = "_ _ main__": print ("Fair2") else: print ("F_2_imported") print ("File 2 _ name__ has set to {}". Format (_ _ name__))

2. If you do not want to use any specific variable name / value when unpacking, use the special variable _ to assign the value.

A, * _, b = ['USA',' Australia', 'Canada','Germany'] print (a, b)

3. You can use the special character _ to traverse iterable objects in a loop.

Such as lists, tuples, dictionaries, and collections.

Country = ['USA',' Australia', 'Canada','Germany',' Switzerland', 'Argentina',' Brazil', 'Kenya',' Britain'] for the country's _: print (_) article on "how to use python underscores", this article ends here. I hope the above content can be of some help to you, so that you can learn more knowledge, if you think the article is good. Please share it for more people to see.