What are the types of arguments in python?
ArgumentsIn the user-defined function topic, we learned about defining a function and calling it. Otherwise, the function call will result in an error. Here is an example. Show
Output Hello Monica, Good morning! Here, the function Since we have called this function with two arguments, it runs smoothly and we do not get any error. If we call it with a different number of arguments, the interpreter will show an error message. Below is a call to this function with one and no arguments along with their respective error messages. >>> greet("Monica") # only one argument TypeError: greet() missing 1 required positional argument: 'msg' >>> greet() # no arguments TypeError: greet() missing 2 required positional arguments: 'name' and 'msg' Variable Function ArgumentsUp until now, functions had a fixed number of arguments. In Python, there are other ways to define a function that can take variable number of arguments. Three different forms of this type are described below. Python Default ArgumentsFunction arguments can have default values in Python. We can provide a default value to an argument by using the assignment operator (=). Here is an example.
Output Hello Kate, Good morning! Hello Bruce, How do you do? In this function, the parameter On the other hand, the parameter Any number of arguments in a function can have a default value. But once we have a default argument, all the arguments to its right must also have default values. This means to say, non-default arguments cannot follow default arguments. For example, if we had defined the function header above as: def greet(msg = "Good morning!", name): We would get an error as: SyntaxError: non-default argument follows default argument Python Keyword ArgumentsWhen we call a function with some values, these values get assigned to the arguments according to their position. For example, in the above function Python allows functions to be called using keyword arguments. When we call functions in this way, the order (position) of the arguments can be changed. Following calls to the above function are all valid and produce the same result.
As we can see, we can mix positional arguments with keyword arguments during a function call. But we must keep in mind that keyword arguments must follow positional arguments. Having a positional argument after keyword arguments will result in errors. For example, the function call as follows:
Will result in an error: SyntaxError: non-keyword arg after keyword arg Python Arbitrary ArgumentsSometimes, we do not know in advance the number of arguments that will be passed into a function. Python allows us to handle this kind of situation through function calls with an arbitrary number of arguments. In the function definition, we use an asterisk (*) before the parameter name to denote this kind of argument. Here is an example.
Output Hello Monica Hello Luke Hello Steve Hello John Here, we have called the function with multiple arguments. These arguments get wrapped up into a tuple before being passed into the function. Inside the function, we use a What are the 3 types of arguments in Python?Hence, we conclude that Python Function Arguments and its three types of arguments to functions. These are- default, keyword, and arbitrary arguments.
What is arguments in Python?The terms parameter and argument can be used for the same thing: information that are passed into a function. From a function's perspective: A parameter is the variable listed inside the parentheses in the function definition. An argument is the value that are sent to the function when it is called.
What are arguments and its types?The three types of argument in logic are deductive, inductive, and abductive. Regardless of the kind of logic being used, each argument will have the same components of a logical argument, namely premises and a conclusion.
What are the 4 types of functions in Python?Types Of Python Functions
Python Built-in Functions. Python Recursion Functions. Python Lambda Functions.
|