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25 minIntermediateLesson 2/5

Return values aur composition

Results return karo aur small functions combine karo.

PDF · Chapter 14 · p.36-37
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
  • Return Values and Composition 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 Return Values and Composition 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

return current call end karke caller ko value deta hai. Bina return function None deta hai.

Real-world connection

print display board hai; return parcel hai jo further use ke liye wapas milta 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

  • Results return karo aur small functions combine 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
Define karo
def greet(name):
01

Define karo

Function reusable steps ko ek jagah rakhta hai.

Runnable example

Return Values and Composition: 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

Bina return function kya produce karta hai?

Intermediate
Coding task · 20 points

Code ko complete karo

Input 3 ke liye square aur add_one compose karo.

challenge.py
Python 3.14 · 5s limit

Key takeaways

  • return current call end karke caller ko value deta hai. Bina return function None deta 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.