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Python Keywords

Python keywords are reserved words that have special meanings in the Python programming language. These words are part of Python’s syntax and cannot be used as variable names, function names, or identifiers. Examples of Python keywords include if, else, for, while, True, False, None, class, and def.

✅ What Are Keywords in Python?
Keywords are special reserved words in Python that have a fixed meaning and purpose in the language.
You cannot use keywords as:
- variable names
- function names
- class names
- identifiers
because Python uses these words to define its syntax and structure.
✔ Important points:
- Keywords are predefined by Python.
- They are used to define the logic, conditions, loops, functions, etc.
- Keywords are case-sensitive (must be lowercase except True, False, None).
You cannot change their meaning.
🧠 Why keywords are important?
Because Python uses them to understand:
- decisions (if, else)
- loops (for, while)
- errors (try, except)
- functions (def, return)
- classes (class)
- Boolean values (True, False)
- nothing value (None)

Note:

Without keywords, Python code cannot work.

🔢 Total Keywords in Python

As of Python 3.12, Python has 35 keywords.

📘 Python Keywords :

Keyword	Meaning
False	Boolean false value
True	Boolean true value
None	Represents no value / null
and	Logical AND operator
or	Logical OR operator
not	Logical OR operator
if	Conditional statement
elif	Else-if condition
else	Final condition in if-block
for	Loop through a sequence
while	Loop until condition becomes false
Break	Exit a loop
continue	Skip current loop iteration
pass	Do nothing (empty block)
def	Define a function
return	Return value from a function
class	Define a class
from	Import specific items
import	Import modules
as	Rename imported module
try	Start exception-handling block
except	Handle exception
finally	Always executes (cleanup code)
raise	Raise an exception
assert	Debugging check
lambda	Create a small anonymous function
del	Delete an object
in	Check membership in a sequence
is	Check identity (same object)
with	Easy resource management
global	Declare a global variable
nonlocal	Use variable from outer function
async	Define asynchronous function
await	Wait for async result
yield	Produce a generator value

✅ What Are Keywords in Python?
Keywords are special reserved words in Python that have a predefined meaning and play a specific role in the language.
These words are part of Python’s core syntax, so you cannot use them as:
- variable names
- function names
- class names
- identifiers
Python relies on keywords to understand the structure of your code.
✔ Key Characteristics of Keywords
- Predefined by Python — you cannot create or modify them.
- Used to build logic — conditions, loops, functions, exceptions, classes, etc.
- Case-sensitive — most are lowercase, except True, False, and None.
- Cannot be reassigned — their meaning cannot be changed.
🧠 Why Are Keywords Important?
Keywords are the building blocks of Python programs.
Python uses them to interpret:
- Decisions: if, elif, else
- Loops: for, while
- Error handling: try, except, finally
- Functions: def, return
- Classes: class
- Boolean values: True, False
- Empty values: None

Note:

Total Python keywords: 35
Keywords are case-sensitive
You cannot redefine keywords

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