Functions in Python
Functions in Python introduce the concept of reusable blocks of code that perform specific tasks, organizing code and reducing repetition. The chapter covers defining and calling functions, using parameters and return values, and differentiating between built-in and user-defined functions. It also explains variable-length arguments and the use of default parameters.
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What we have learnt
- Functions are reusable blocks of code that help improve organization and readability.
- Parameters allow functions to accept input, and return values let them output results.
- Built-in functions are predefined in Python, while user-defined functions are created by the user.
Key Concepts
- -- Function
- A reusable block of code designed to perform a specific task.
- -- Parameters
- Inputs that are passed to functions, allowing them to accept varying inputs.
- -- Return Value
- The output that a function produces after execution, specified using the return keyword.
- -- Default Parameters
- Parameter values assigned in function definitions that are used if no argument is provided.
- -- *args and **kwargs
- Special syntax for passing a variable number of arguments to functions, where args allows any number of positional arguments and *kwargs allows any number of keyword arguments.
- -- Builtin Functions
- Functions that are predefined in Python, such as print() and len().
- -- Userdefined Functions
- Functions that the user creates using the 'def' keyword.
Additional Learning Materials
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