How does Python treat function parameters that do not receive any arguments?

When a function in Python is defined with parameters and is called without passing the appropriate arguments for those parameters, Python uses default values for those parameters if they have been assigned. This means that if a function has default values for some of its parameters, those parameters will take on the specified default values when no corresponding arguments are provided in the function call.

For example, if a function is defined as def example_function(param1=5):, and the function is called as example_function(), param1 will default to 5. This allows for greater flexibility when defining functions, as it enables the programmer to create functions that can be invoked with varying numbers of arguments.

In contrast, if a parameter does not have a default value and is not passed an argument during the function call, the program will raise a TypeError, indicating that the required positional argument was not provided. Therefore, while parameters with default values operate as intended, parameters without them lead to an error when omitted.