Computer Science
Explain the difference between import <module> and from <module> import statements, with examples.
Python Libraries
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Answer
import <module> statement | from <module> import statement |
|---|---|
| It imports entire module. | It imports single, multiple or all objects from a module. |
To access one of the functions, we have to specify the name of the module and the name of the function, separated by a dot. This format is called dot notation. The syntax is : <module-name>.<function-name>() | To access functions, there is no need to prefix module's name to imported item name. The syntax is : <function-name> |
| Imports all its items in a new namespace with the same name as of the module. | Imports specified items from the module into the current namespace. |
| This approach does not cause any problems. | This approach can lead to namespace pollution and name clashes if multiple modules import items with the same name. |
| For example: import math print(math.pi) print(math.sqrt(25)) | For example: from math import pi, sqrt print(pi) print(sqrt(25)) |
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