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25 minIntermediateLesson 1/5

Lists aur comprehensions

Ordered, mutable sequences manage karo.

PDF · Chapter 7.5 and 18 · p.17-41
1 · Samjho

Idea, words aur real-world use pehle padho.

2 · Karke dekho

Example run karo, phir code task solve karo.

3 · Samjhaao

Quick check aur apne notes se concept explain karo.

Is lesson ke baad
  • Lists and Comprehensions ko apne words mein explain kar paana.
  • Working example ko run aur modify kar paana.
Yahin se start karo - pehle se kuch aana zaroori nahi

Kisi question ka answer dene se pehle hum samjhenge ki Lists and Comprehensions ka matlab kya hai, ye kahan useful hai aur example kaise behave karta hai. Naye words aate hi explain kiye gaye hain.

Idea ko samjho

Lists order preserve karti hain, duplicates allow karti hain aur change ho sakti hain. Comprehension iterable se new list banata hai.

Real-world connection

Shopping list ordered hoti hai aur plan change hone par edit ho sakti hai.

Example ko step-by-step padho

  1. 1Program mein banaye gaye names aur values pehchaano.
  2. 2Har line ko top-to-bottom trace karo aur dekho wo kya change karti hai.
  3. 3Run Python dabane se pehle output predict karo, phir ek value change karo.

Kya yaad rakhna hai

  • Ordered, mutable sequences manage karo.
  • Mistake useful feedback hai: error ki last line padho, ek cheez change karo aur dobara run karo.
Interactive concept lab

Concept ko step-by-step dekho

Arrows use karke data ka safar samjho.

3D flow · 1/3
Shape chuno
list · tuple · set · dict
01

Shape chuno

Har collection alag storage problem solve karti hai.

Runnable example

Lists and Comprehensions: working example

Example run karo, phir ek value change karke apni understanding test karo.

example.py
Python 3.14 · 5s limit
Quick check · 10 points

Kaunsa list method end mein ek item add karta hai?

Intermediate
Coding task · 20 points

Code ko complete karo

1 se 4 tak squares banao.

challenge.py
Python 3.14 · 5s limit

Key takeaways

  • Lists order preserve karti hain, duplicates allow karti hain aur change ho sakti hain. Comprehension iterable se new list banata hai.
  • Is idea ko seekhne ka fastest way example ko change karke rerun karna hai.
Previous

Pass the quick check and coding task to complete this lesson.