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
- The syntax for importing a module is `import module_name`.
- To access a specific function from a module, use `module_name.function_name()`.
- You can import multiple modules using separate import statements or comma-separated values.
- Using `from module_name import function_name` allows direct access to functions without prefixing them with the module name.
- 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.
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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.
