Reserved Words in Python

Reserved Words

Reserved word in any programming language is a word which has some fixed meaning and cannot be redefined by the programmer.

Reserved means “kept for some special purpose”

In Python, some words are reserved to represent some meaning or functionality. 

Such words are called as Reserved words.

There are 33 reserved words available in Python.

• True, False, None  
• and, or ,not, is      
• if, elif, else  
• while, for, break, continue, return, in, yield  
• try, except, finally, raise, assert 
•  import, from, as, class, def, pass, global, nonlocal, lambda, del, with

Note:

1. All Reserved words in Python contain only alphabet symbols.

2. Except the following 3 reserved words, all contain only lower case alphabet symbols.

• True
• False
• None

Eg: a= true ❌

a=True ✅

How we can check the keywords programmatically:

Import the module keyword and check the kwlist attribute

(don’t worry about the meaning of module, everything will be discussed step by step)

>>> import keyword

>>> keyword.kwlist

['False', 'None', 'True', 'and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'nonlocal', 'not', 'or', 'pass', 'raise', 'return', 'try', 'while', 'with', 'yield']