Arguments
Explore the different types of function arguments in Python, such as positional, keyword, variable-length, and default arguments. Understand how to use these arguments properly, including unpacking sequences and dictionaries, to write versatile and error-free functions. This lesson deepens your skills in function parameter handling essential for effective Python programming.
Types of arguments
Arguments in a Python function can be of four types:
- Positional arguments
- Keyword arguments
- Variable-length positional arguments
- Variable-length keyword arguments
Positional and keyword arguments are often called required arguments, whereas variable-length arguments are called optional arguments.
Positional arguments
Positional arguments must be passed in the correct positional order. For example, if a function expects an int, float, and str to be passed to it, then while calling this function, the arguments must be passed in the same order.