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Oct 25, 2024 · What is Python *args? The special syntax *args in function definitions in Python is used to pass a variable number of arguments to a function. It is used to pass a non-keyworded, variable-length argument list.
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Arbitrary Arguments, *args. If you do not know how many arguments that will be passed into your function, add a * before the parameter name in the function definition. This way the function will receive a tuple of arguments, and can access the items accordingly:
Putting *args and/or **kwargs as the last items in your function definition’s argument list allows that function to accept an arbitrary number of arguments and/or keyword arguments.
You’ll learn how to use args and kwargs in Python to add more flexibility to your functions. By the end of the article, you’ll know: What *args and **kwargs actually mean. How to use *args and **kwargs in function definitions. How to use a single asterisk (*) to unpack iterables.
The *args is a special argument preceded by a star (*). When passing the positional arguments 10, 20, 30, and 40 to the function, Python assigns 10 to x, 20 to y, and a tuple (30, 40) to args. It’s like tuple unpacking except that the args is a tuple, not a list.
*args and **kwargs are special keyword which allows function to take variable length argument. *args passes variable number of non-keyworded arguments and on which operation of the tuple can be performed. **kwargs passes variable number of keyword arguments dictionary to function on which operation of a dictionary can be performed.
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Mar 23, 2022 · *args allows us to pass a variable number of non-keyword arguments to a Python function. In the function, we should use an asterisk ( * ) before the parameter name to pass a variable number of arguments.