Course Content
Python Functions Tutorial
1. What is Function in Python?
2. Positional and Optional Arguments
4. Function Return Value Specification
5. Recursion and Lambda Functions
Python Functions Tutorial
None Return Value
In Python, None
is a special object that represents the absence of a value. If we don't specify any return value, None
is used by default.
It is commonly used to indicate that a function does not return any meaningful result. Let's consider different cases when None
return value can be used:
First case
When the function does not have a specific result or value to return:
In this case, the function greet()
simply prints a greeting message but does not return any specific value. The default return value is None
.
Second case
When a function is used for its side effects or actions rather than a return value:
In this example, the function save_data()
performs some actions to save data but does not return any specific result. The return value is None
, but the focus is on the side effect of saving the data.
Everything was clear?
Course Content
Python Functions Tutorial
1. What is Function in Python?
2. Positional and Optional Arguments
4. Function Return Value Specification
5. Recursion and Lambda Functions
Python Functions Tutorial
None Return Value
In Python, None
is a special object that represents the absence of a value. If we don't specify any return value, None
is used by default.
It is commonly used to indicate that a function does not return any meaningful result. Let's consider different cases when None
return value can be used:
First case
When the function does not have a specific result or value to return:
In this case, the function greet()
simply prints a greeting message but does not return any specific value. The default return value is None
.
Second case
When a function is used for its side effects or actions rather than a return value:
In this example, the function save_data()
performs some actions to save data but does not return any specific result. The return value is None
, but the focus is on the side effect of saving the data.
Everything was clear?