How to use reload in python

Editor to share with you how to use reload in python, 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!

Description

1. Use the premise that the module re-imported by the reload function has been successfully imported before using import or from.

Otherwise, the reload function will not work, and importing is an expensive operation. Module must be a successfully imported module.

2. The reload function forces Python to re-import and execute the module file.

The import statement in Python can import the module file, but the import statement simply executes the code in the module file on the first import, and then stores the imported module file in memory. When imported again, Python fetches the module file directly from memory without executing the contents of the module file.

Example

Import importlibimport timeimport learning.parameters as pa while True: importlib.reload (pa) print (pa.word) time.sleep (1) the above is all the content of this article "how to use reload in python". 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!