How do you import modules in Python?

In Python, there are three common methods for importing modules.

1. To import an entire module using the import statement: After the import keyword, include the name of the module. For example: import math. This method imports all the functions of the module into the current file and requires using the module name as a prefix when using them.
2. You can import specific functions or variables using the from…import statement. Just use the from keyword followed by the module’s name, and then use the import keyword followed by the specific function or variable you want to import. For example: from math import sqrt. This method only imports the specified function or variable, allowing you to use it directly without needing to use the module name as a prefix.
3. Use the ‘as’ keyword to create an alias for imported modules or functions: When importing a module or function, add the ‘as’ keyword followed by the desired alias. For example: import math as m or from math import sqrt as s. This method allows for a more concise or easily understandable alias to be assigned to the imported module or function, which can be used in place of the original name when needed.

It is important to note that when importing a module, make sure the module is already installed in the Python environment. If it is not installed, you can install it using the pip command.