Python Tutorial - Lists
📋 Lists - Multiple Items Store Karo
🌟 Real Life Mein:
Har din lists use karte hain:
🛒 "Shopping list" - [Bread, Milk, Eggs]
📝 "To-do list" - [Study, Exercise, Cook]
🎬 "Playlist" - [Song1, Song2, Song3]
📞 "Contact list" - [Mom, Dad, Friend]
Python List = Ek dabba jisme bahut saari cheezein!
📦 List Kya Hai?
List ek ordered collection hai jisme:
- Multiple items store kar sakte ho
- Har item ka ek index (position) hota hai
- Items change kar sakte ho (mutable)
- Duplicate items allowed hain
List Banao aur Access Karo
# List banana
fruits = ["Apple", "Banana", "Mango", "Orange"]
# Access by index (0 se start)
print(fruits[0]) # Apple (first)
print(fruits[1]) # Banana (second)
print(fruits[-1]) # Orange (last)
print(fruits[-2]) # Mango (second last)🛠️ List Operations
| Method | Kya Karta Hai | Example |
|---|---|---|
.append() | End mein add | list.append("New") |
.insert() | Position par add | list.insert(0, "First") |
.remove() | Item hatao | list.remove("Apple") |
.pop() | Last item nikalo | list.pop() |
.sort() | Arrange karo | list.sort() |
len() | Kitne items? | len(list) |
🛒 Shopping List Manager
# Aaj ka shopping list
shopping = ["Bread", "Milk"]
# Items add karo
shopping.append("Eggs")
shopping.append("Butter")
print(shopping) # [Bread, Milk, Eggs, Butter]
# Ek item khareed liya, hata do
shopping.remove("Bread")
# Total items
print(f"Baaki items: {len(shopping)}")
# Saare items dekhlo
for item in shopping:
print(f"☐ {item}")
Index yaad rakho: Python mein counting 0 se start hoti hai!
First item = index 0, Second = 1, Third = 2...
First item = index 0, Second = 1, Third = 2...
Example
fruits = ["Apple", "Banana"]
fruits.append("Mango")
print(fruits)