None: Represents null/empty value (e.g., x = None)True: Boolean true value (e.g., x = True)False: Boolean false value (e.g., x = False)and: Logical AND operator (e.g., if x > 0 and y > 0:)or: Logical OR operator (e.g., if x > 0 or y > 0:)not: Logical NOT operator (e.g., if not x):in: Membership test operator (e.g., if x in list:)is: Identity comparison (e.g., if x is None:)if: Conditional statement (e.g., if x > 0:)elif: Else if condition (e.g., elif x < 0:)else: Default condition (e.g., else:)for: For loop (e.g., for x in list:)while: While loop (e.g., while condition:)break: Exit loop (e.g., break)continue: Skip to next iteration (e.g., continue)pass: Null operation placeholder (e.g., pass)try: Begin exception handling block (e.g., try:)except: Handle specific exceptions (e.g., except ValueError:)finally: Always executed block (e.g., finally:)raise: Raise an exception (e.g., raise ValueError("Invalid input"))assert: Debug assertion (e.g., assert x > 0, "x must be positive")def: Define function (e.g., def my_function():)class: Define class (e.g., class MyClass:)return: Return value from function (e.g., return result)yield: Generator yield (e.g., yield value)lambda: Anonymous function (e.g., lambda x: x * 2)global: Declare global variable (e.g., global counter)nonlocal: Declare nonlocal variable (e.g., nonlocal outer_var)import: Import module (e.g., import math)from: Import specific items (e.g., from math import sqrt)as: Alias for imports (e.g., import numpy as np)async: Define async function (e.g., async def fetch_data():)await: Wait for async operation (e.g., result = await fetch_data())del: Delete object reference (e.g., del my_variable)with: Context manager (e.g., with open('file.txt') as f:)