Reserved words in Python

Reaserved keywords in Python 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 or function names or as identifiers . Here is the list . ( this may change with different versions of Python )

FalseNoneTrueandas
assertasyncawaitbreakclass
continuedefdelelifelse
exceptfinallyforfromglobal
ifimportinislambda
nonlocalnotorpassraise
returntrywhilewithyield


Python reserved words list using keyword module with methods to check words

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
import keyword
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 & identifiers in Python Built in Functions in Python

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