Shulou(Shulou.com)05/31 Report--

In this article, the editor introduces in detail the "python assert assertion how to use", the content is detailed, the steps are clear, and the details are handled properly. I hope this "python assert assertion how to be used" article can help you solve your doubts.

Assertion declaration is a convenient way to debug a program.

1. Assertions can be regarded as debug tools, and the implementation of Python is also in line with this design concept. The execution of the assert statement depends on _ _ debug__, and the default value is True.

2. If _ _ debug__ is True, only the assert statement is executed.

Example

Assert can declare two expression at the same time, for example, assert expression1, expression2 is equivalent to

If _ _ debug__: if not expression1: raise AssertionError (expression2)

If you execute the script file with the-O parameter, _ _ debug__ is False.

What are the five characteristics of python? what are the five characteristics of python:

1. It's easy to learn, and when you develop a program, you focus on solving problems, not understanding the language itself.

two。 Object-oriented, compared with other major languages such as C++ and Java, Python implements object-oriented programming in a very powerful and simple way.

3. Portability, Python programs can run on a variety of platforms without modification.

4. Explanation, programs written in Python do not need to be compiled into binary code and can be run directly from the source code. 5. Open source, Python is one of FLOSS (Free / Open Source Software).

Read here, this "python assert assertion how to use" article has been introduced, want to grasp the knowledge of this article also need to practice and use to understand, if you want to know more about the article, welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.