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Arguments | What is Function in Python?
Python Functions Tutorial

## Arguments

In Python, function arguments are the inputs you give to a function when you call it. They let you provide data or values that the function can work with. These arguments can be individual values or objects like lists, tuples, dictionaries, or custom objects.

For instance, when we use the `print()` function, we provide a string as an argument. Here's another example:

Assume that we want to write the function that calculates the sum of two different numbers and prints the result. To do it we have to pass these two numbers to the function. We have to do it using `()` brackets.

Note

You may noticed that we use letter `f` at the beginning of the string as the argument of `print()` function. Such construction is called f-string. In Python source code, an f-string is a literal string, prefixed with f , which contains expressions inside braces.

We have passed `num_1` and `num_2` as an arguments of the function and then used them to calculate the sum. We can set an arbitrary number of function arguments. Next, you will solve a problem with 4 function arguments.
Now let's consider an example when we use a list as an argument of the function:

Assume that you have to calculate perimeter of the triangle with sides `a`, `b` and `c`. Write the function with calculates perimeter and prints it in console.

Everything was clear?

Section 1. Chapter 3

Course Content

Python Functions Tutorial

# Python Functions Tutorial

1. What is Function in Python?

2. Positional and Optional Arguments

4. Function Return Value Specification

5. Recursion and Lambda Functions

## Arguments

In Python, function arguments are the inputs you give to a function when you call it. They let you provide data or values that the function can work with. These arguments can be individual values or objects like lists, tuples, dictionaries, or custom objects.

For instance, when we use the `print()` function, we provide a string as an argument. Here's another example:

Assume that we want to write the function that calculates the sum of two different numbers and prints the result. To do it we have to pass these two numbers to the function. We have to do it using `()` brackets.

Note

You may noticed that we use letter `f` at the beginning of the string as the argument of `print()` function. Such construction is called f-string. In Python source code, an f-string is a literal string, prefixed with f , which contains expressions inside braces.

We have passed `num_1` and `num_2` as an arguments of the function and then used them to calculate the sum. We can set an arbitrary number of function arguments. Next, you will solve a problem with 4 function arguments.
Now let's consider an example when we use a list as an argument of the function:

Assume that you have to calculate perimeter of the triangle with sides `a`, `b` and `c`. Write the function with calculates perimeter and prints it in console.