Import statement

Definition

An import statement allows you to bring in modules and their functions for use in your Python program. It is essential for accessing pre-built functionalities like those in the math module.

5 Must Know Facts For Your Next Test

1. The syntax for importing a module is `import module_name`.
2. To access a specific function from a module, use `module_name.function_name()`.
3. You can import multiple modules using separate import statements or comma-separated values.
4. Using `from module_name import function_name` allows direct access to functions without prefixing them with the module name.
5. The math module provides mathematical functions such as `sqrt`, `pow`, and constants like `pi`.

Review Questions

• What is the syntax to import only the sqrt function from the math module?
• How do you call the pow function from the math module after importing it?
• Explain what happens when you use 'import *' with a module.

Related terms

Module: A file containing Python definitions and statements that can be imported and used in other Python programs.

Function: A block of code which only runs when it is called, often used for performing specific tasks within a program.

Namespace: A container that holds a set of identifiers (names) and ensures that all names are unique within that space to avoid naming conflicts.