Python bool() Function

Python bool() Function

The python bool() method converts value to boolean (True or False) using the standard truth testing procedure.

Signature

1. bool([value])  

Parameters

It is not mandatory to pass value to bool(). If you do not pass the value, bool() returns False.

In general , bool() takes a single parameter value.

Return

The bool() returns:

• False if the value is omitted or false
• True if the value is true

Python bool() Function Example

1. test = []  
2. print(test,'is',bool(test))  
3.   
4. test = [0]  
5. print(test,'is',bool(test))  
6.   
7. test = 0.0  
8. print(test,'is',bool(test))  
9.   
10. test = None  
11. print(test,'is',bool(test))  
12.   
13. test = True  
14. print(test,'is',bool(test))  
15.   
16. test = 'Easy string'  
17. print(test,'is',bool(test))  

Output:

[] is False
[0] is True
0.0 is False
None is False
True is True
Easy string is True