What are the uses of “from” and “import” in Python?

In Python, ‘from’ and ‘import’ are keywords used to import modules and objects.

You can use the “from” keyword to import specific objects from a module. The syntax is as follows:

from module import object

Module is the name of the module, and object is the name of the object to be imported.

For example, to import the sqrt function from the math module, you can use the following code:

from math import sqrt

You can import the entire module using the import keyword. The syntax is as follows:

import module

“其中，module是指模块的名称。”

For example, to import the math module, you can use the following code:

import math

When importing a module using the import keyword, you can access objects within the module using a dot. For example, to use the sqrt function in the math module, you can use the following code:

import math
result = math.sqrt(16)

When importing objects using the ‘from’ keyword, you can use the object’s name directly without needing to use the module name as a prefix. For example, after importing the ‘sqrt’ function from the ‘math’ module using the ‘from’ keyword, you can use the ‘sqrt’ function directly without needing to use ‘math.sqrt’.

from math import sqrt
result = sqrt(16)