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🐍 FREE 30-DAY SERIES
30 Days of Python Interview
Questions & Answers
A structured Python interview prep series for data analysts — one topic per day, from variables to Pandas, EDA, automation, and real-world coding challenges.
30
Days
150+
Questions
Free
Always
Week 1 — Python Foundations
Day 1Basics
Python Basics — Variables, Data Types & Print
6 questions →
Day 2Strings
Strings — Manipulation & Methods
6 questions →
Day 3Lists
Lists — Operations & Methods
6 questions →
Day 4Collections
Dictionaries & Sets
5 questions →
Day 5Control Flow
Conditionals & Loops
5 questions →
Day 6Functions
Functions — Definition, Arguments & Scope
5 questions →
Day 7File I/O
File Handling & Error Handling
5 questions →
Week 2 — NumPy, Pandas & Data Import
Day 8NumPy
NumPy Arrays — Fundamentals
5 questions →
Day 9Pandas
Pandas Series — The Foundation
5 questions →
Day 10DataFrames
DataFrames — Core Operations
5 questions →
Day 11Data Import
Reading CSV, Excel & JSON Files
5 questions →
Day 12Data Cleaning
Data Cleaning — The Core Skill
5 questions →
Day 13Data Quality
Handling Nulls & Outliers
5 questions →
Day 14GroupBy
GroupBy & Pivot Tables
5 questions →
Week 3 — Cleaning, EDA & Visualisation
Day 15Merging
Merging & Joining DataFrames
5 questions →
Day 16String & Date
String & Date Operations
5 questions →
Day 17Visualisation
Matplotlib — Charts & Plots
5 questions →
Day 18Seaborn
Seaborn — Statistical Visualisation
5 questions →
Day 19EDA
EDA — Exploratory Data Analysis Workflow
5 questions →
Day 20Statistics
Descriptive Statistics
5 questions →
Day 21Statistics
Correlation & Hypothesis Testing
5 questions →
Week 4 — Real-World & Interview Prep
Day 22Feature Engineering
Feature Engineering Basics
5 questions →
Day 23Performance
apply(), map(), and Vectorisation
5 questions →
Day 24Automation
Excel Automation with Python
5 questions →
Day 25SQL Integration
SQL with Python — pandas & SQLAlchemy
5 questions →
Day 26Advanced Python
List Comprehensions, Generators & Functional Tools
5 questions →
Day 27OOP
OOP Basics for Data Analysts
5 questions →
Day 28Best Practices
Virtual Environments & Python Best Practices
5 questions →
Day 29Coding Practice
Python Coding Challenges for Analysts
5 questions →
Day 30Mock Interview
Python Mock Interview — Real Questions & Model Answers
5 questions →
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