List of reserved keywords in Python and how to check and display the words

Python has a list of keywords which it uses for its syntax and internal processing. We can’t use these reserved words in our program as variable names. Here is the list . ( this may change with different versions of Python )

`False`	`None`	`True`	`and`	`as`
`assert`	`async`	`await`	`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`

How to know if the name is included in the reserved key word list or not ?

We are checking the key word ( variable name ) nonlocal

print(keyword.iskeyword('nonlocal')) # True

Display the full list of reserved keywords

We can display full list of reserved keywords in Python ( current version )

import keyword 
print(keyword.kwlist)

To know the number of words in the reserved keyword list

print(len(keyword.kwlist)) # 35  ( may change )

If we use any of the above listed words as variable then we will get the error message SyntaxError: invalid syntax

def is a reserved word ( for defining functions )
This line will generate error

def=45

SyntaxError: invalid syntax

variables in Python Built in Functions in Python

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Reserved words in Python

How to know if the name is included in the reserved key word list or not ?

Display the full list of reserved keywords