Usage of import statement in python

The import statement in Python is used to introduce other modules or packages in order to use the functions they provide in the current code. Common usages include "introducing the entire module", "specifying an alias for the module", and "introducing only the module Four usages: "Specific content" and "Introduce all content in the module": 1. Introduce the entire module "import module_name" You can use module_name to access functions, classes, variables, etc. in the module.

In Python, the import statement is used to introduce other modules or packages in order to use the functionality they provide in the current code. The import statement can be used in different ways, depending on the type of module or package that needs to be imported.

Here are some common uses of the import statement:

1. Introducing the entire module:

   import module_name

This will introduce the module named module_name. In subsequent code, module_name can be used to access functions, classes, and variables in the module.

2. Assign an alias to the module:

   import module_name as alias_name

This will introduce the module named module_name and name it alias_name. Use alias_name to access content in this module.

3. Only import specific content (functions, classes or variables) from the module:

   from module_name import object_name

This will import the function, class or variable named object_name from the module_name module . In subsequent code, object_name can be used directly without adding the module name in front.

4. Introduce everything in the module:

   from module_name import *

This will import all functions, classes and variables in the module_name module. In subsequent code, you can use these directly without prepending the module name. However, this approach is not clear enough and may lead to naming conflicts, so it is not recommended for large projects.

5. Introduce some contents in the module and assign aliases to them:

   from module_name import object_name as alias_name

This will introduce the function, class or variable named object_name from the module_name module, and Name it alias_name. In subsequent code, you can use alias_name to access the object.

The above are some common uses of the import statement. You can choose the appropriate way to introduce modules or packages according to your needs.

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