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Editor to share with you what improvements python3 has compared to python2, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

1. Improvement of python3

1. Python3 introduces asyncio to compile asynchronous IO.

2. Print is a keyword in python2, and python3 is a function

3. Coding problem. Python3 no longer has unicode object, and str is unicode.

4. The change of division. Python 3 division returns the floating point number 5max 2 = 2.5

5. Type comments (type hint)

6. Optimized super (), which calls the method of the parent class directly.

7. Advanced unpacking operations, such as a, b, * c = range (10)

8. Limit keyword parameters, and specify parameters when there are many parameters to avoid confusion

9. Python3 will not lose stack information if it runs out of exception again.

10. Everything returns to the iterator

11. Add yield from link generator

12. Add built-in libraries such as enum,mock, asyncio, ipaddress, concurrent, futures, etc.

13. The generated pyc files are uniformly placed in pycache

14. Some built-in library modifications. Urllib,selector et al.

15. Performance optimization

2. Tools that are compatible with 2max 3

1. Six module

2, 2to3 and other tools to convert the code

3 、 future

These are all the contents of this article entitled "what are the improvements of python3 compared to python2?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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