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25 minAdvancedLesson 3/5

Data clean aur validate karo

Missing values, duplicates, types aur inconsistent categories handle 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
  • Clean and Validate Data 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 Clean and Validate Data 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

Cleaning explicit decisions ki sequence hai: inspect, standardize, validate, deduplicate, missing values handle aur changes record karo.

Real-world connection

Laundry labels matter: different stains ko different treatment chahiye aur missing items silently invent nahi karne.

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

  • Missing values, duplicates, types aur inconsistent categories handle 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
Collect
CSV rows
01

Collect

Sawaal aur relevant data se shuru karo.

Runnable example

Clean and Validate Data: 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

Cleaning ko kya preserve karna chahiye?

Advanced
Coding task · 20 points

Code ko complete karo

Names normalize aur deduplicate karo.

challenge.py
Python 3.14 · 5s limit

Key takeaways

  • Cleaning explicit decisions ki sequence hai: inspect, standardize, validate, deduplicate, missing values handle aur changes record karo.
  • 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.