Home/Seekho/Modern aur real-world Python/Decorators aur context managers
25 minAdvancedLesson 2/5

Decorators aur context managers

Behavior wrap karo aur setup/cleanup protocols manage karo.

Project-ready extension
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
  • Decorators and Context Managers 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 Decorators and Context Managers 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

Decorator callable accept aur return karta hai. Context manager with block ke around entry/exit behavior define karta hai.

Real-world connection

Security wrapper original service se pehle visitor check karta hai; context manager room open aur close karta 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

  • Behavior wrap karo aur setup/cleanup protocols 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
Raw input
records
01

Raw input

Clear input contract se shuru karo.

Runnable example

Decorators and Context Managers: 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

Decorator kya receive karta hai?

Advanced
Coding task · 20 points

Code ko complete karo

Ek decorator banao jo one add kare.

challenge.py
Python 3.14 · 5s limit

Key takeaways

  • Decorator callable accept aur return karta hai. Context manager with block ke around entry/exit behavior define karta 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.