Example analysis of assert usage in python

This article is an example of assert usage in python. Shared for your reference. Specific analysis is as follows:

1. The assert statement is used to declare that a condition is true.

2. If you're pretty sure that there's at least one element in a list you're using, and you want to test this and raise an error if it's not true, then the assert statement is the ideal statement to use in this situation.

3, when the assert statement fails, it will trigger an AssertionError.

Test program:

>>> mylist = ['item']
>>> assert len(mylist) >= 1
>>> ()
'item'
>>> assert len(mylist) >= 1
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
AssertionError
>>>

I hope that what I have described in this article will help you in your Python programming.