Python:
---
Basics
Comments:
Single-line: # This is a comment
Multi-line: """ This is a multi-line
comment """
, Printing: print("Hello, World!")
---
Data Types
Numbers: int, float, complex
Text: str
Here are some key notes for Python: --- Basics Comments: Single-line: # This is a comment Multi-line: """ This is a multi-line comment """ Printing: print("Hello, World!") --- Data Types Numbers: int, float, complex Text: str Collections: list, tuple, set, dict Boolean: bool --- Variables No need to declare type: x = 10 Multiple assignments: a, b, c = 1, 2, 3 --- Control Flow If/Else: if condition: # code elif another_condition: # code else: # code Loops: for: Iterate over a sequence. for item in range(5): # 0 to 4 print(item) while: Repeat as long as the condition is true. while condition: # code --- Functions Define a function using def: def my_function(arg1, arg2): return arg1 + arg2 --- Data Structures 1. List (mutable): my_list = [1, 2, 3] my_d(4) 2. Tuple (immutable): my_tuple = (1, 2, 3) 3. Set (unique items): my_set = {1, 2, 3} my_(4) 4. Dictionary (key-value pairs): my_dict = {"key1": "value1", "key2": "value2"} print(my_dict["key1"]) --- File Handling Open a file: with open("", "r") as file: content = () --- Object-Oriented Programming (OOP) Class & Object: class MyClass: def __init__(self, name): = name def greet(self): return f"Hello, {}" obj = MyClass("Python") print(()) --- Libraries Common libraries: math, os, sys, random, datetime, numpy, pandas Importing: import math print((16)) --- Key Python Features List Comprehensions: squares = [x**2 for x in range(5)] Lambda Functions: add = lambda a, b: a + b print(add(3, 4)) Error Handling: try: # code except Exception as e: print(e) --- Let me know if you want detailed examples for any section!
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