How to import packages and modules in Python

This article is to share with you about how to import packages and modules in Python, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Import

Tip

Use import definitions only for packages and modules: a reuse mechanism for sharing code between modules. Advantages: the namespace management convention is very simple. The source of each identifier is indicated in a consistent way. X.Obj means that the Obj object is defined in module x. Cons: module names may still conflict. Some module names are too long to be convenient. Conclusion:

Use import x to import packages and modules.

Use from x import y, where x is the package prefix and y is the module name without the prefix.

Using from x import y as z, if both modules to be imported are called y or y is too long.

For example, the module sound.effects.echo can be imported as follows:

From sound.effects import echo...echo.EchoFilter (input, output, delay=0.7, atten=4)

Do not use relative names when importing. Use the full package name even if the module is in the same package. This can help you avoid inadvertently importing a package twice.

The above is how to import packages and modules in Python. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.