Python for Data Analysts
47.6K subscribers
482 photos
64 files
316 links
Find top Python resources from global universities, cool projects, and learning materials for data analytics.

For promotions: @coderfun

Useful links: heylink.me/DataAnalytics
Download Telegram
Data analytics is not about the the tools you master but about the people you influence.

I see many debates around the best tools such as:

- Excel vs SQL
- Python vs R
- Tableau vs PowerBI
- ChatGPT vs no ChatGPT

The truth is that business doesn't care about how you come up with your insights.

All business cares about is:

- the story line
- how well they can understand it
- your communication style
- the overall feeling after a presentation

These make the difference in being perceived as a great data analyst...

not the tools you may or may not master ๐Ÿ˜…
๐Ÿ‘4โค3
Python for Everything:

Python + Django = Web Development

Python + Matplotlib = Data Visualization

Python + Flask = Web Applications

Python + Pygame = Game Development

Python + PyQt = Desktop Applications

Python + TensorFlow = Machine Learning

Python + FastAPI = API Development

Python + Kivy = Mobile App Development

Python + Pandas = Data Analysis

Python + NumPy = Scientific Computing
โค4๐Ÿ‘1
โŒจ๏ธ Learn About Python List Methods
โค3๐Ÿ‘2
SQL INTERVIEW Questions

Explain the concept of window functions in SQL. Provide examples to illustrate their usage.

Answer:

Window Functions:
Window functions perform calculations across a set of table rows related to the current row. Unlike aggregate functions, window functions do not group rows into a single output row; instead, they return a value for each row in the query result.

Types of Window Functions:
1. Aggregate Window Functions: Compute aggregate values like SUM, AVG, COUNT, etc.
2. Ranking Window Functions: Assign a rank to each row, such as RANK(), DENSE_RANK(), and ROW_NUMBER().
3. Analytic Window Functions: Perform calculations like LEAD(), LAG(), FIRST_VALUE(), and LAST_VALUE().

Syntax:
SELECT column_name, 
window_function() OVER (PARTITION BY column_name ORDER BY column_name)
FROM table_name;

Examples:

1. Using ROW_NUMBER():
Assign a unique number to each row within a partition of the result set.

   SELECT employee_name, department_id, salary,
ROW_NUMBER() OVER (PARTITION BY department_id ORDER BY salary DESC) AS rank
FROM employees;

This query ranks employees within each department based on their salary in descending order.

2. Using AVG() with OVER():
Calculate the average salary within each department without collapsing the result set.

   SELECT employee_name, department_id, salary,
AVG(salary) OVER (PARTITION BY department_id) AS avg_salary
FROM employees;

This query returns the average salary for each department along with each employee's salary.

3. Using LEAD():
Access the value of a subsequent row in the result set.

   SELECT employee_name, department_id, salary,
LEAD(salary, 1) OVER (PARTITION BY department_id ORDER BY salary) AS next_salary
FROM employees;

This query retrieves the salary of the next employee within the same department based on the current sorting order.

4. Using RANK():
Assign a rank to each row within the partition, with gaps in the ranking values if there are ties.

   SELECT employee_name, department_id, salary,
RANK() OVER (PARTITION BY department_id ORDER BY salary DESC) AS rank
FROM employees;

This query ranks employees within each department by their salary in descending order, leaving gaps for ties.

Tip: Window functions are powerful for performing calculations across a set of rows while retaining the individual rows. They are useful for running totals, moving averages, ranking, and accessing data from other rows within the same result set.

Go though SQL Learning Series to refresh your basics

Share with credits: https://t.me/sqlspecialist

Like this post if you want me to continue SQL Interview Preparation Series ๐Ÿ‘โค๏ธ

Hope it helps :)
๐Ÿ‘7โค2
๐Ÿ”ฐ Python Roadmap for Beginners

โ”œโ”€โ”€ ๐Ÿ Introduction to Python
โ”œโ”€โ”€ ๐Ÿงพ Installing Python & Setting Up VS Code / Jupyter
โ”œโ”€โ”€ โœ๏ธ Python Syntax & Indentation Basics
โ”œโ”€โ”€ ๐Ÿ”ค Variables, Data Types (int, float, str, bool)
โ”œโ”€โ”€ โž— Operators (Arithmetic, Comparison, Logical)
โ”œโ”€โ”€ ๐Ÿ” Conditional Statements (if, elif, else)
โ”œโ”€โ”€ ๐Ÿ”„ Loops (for, while, break, continue)
โ”œโ”€โ”€ ๐Ÿงฐ Functions (def, return, args, kwargs)
โ”œโ”€โ”€ ๐Ÿ“ฆ Built-in Data Structures (List, Tuple, Set, Dictionary)
โ”œโ”€โ”€ ๐Ÿง  List Comprehension & Dictionary Comprehension
โ”œโ”€โ”€ ๐Ÿ“‚ File Handling (read, write, with open)
โ”œโ”€โ”€ ๐Ÿž Error Handling (try, except, finally)
โ”œโ”€โ”€ ๐Ÿงฑ Modules & Packages (import, pip install)
โ”œโ”€โ”€ ๐Ÿ“Š Working with Libraries (NumPy, Pandas, Matplotlib)
โ”œโ”€โ”€ ๐Ÿงน Data Cleaning with Pandas
โ”œโ”€โ”€ ๐Ÿงช Exploratory Data Analysis (EDA)
โ”œโ”€โ”€ ๐Ÿค– Intro to OOP in Python (Class, Objects, Inheritance)
โ”œโ”€โ”€ ๐Ÿง  Real-World Python Projects & Challenges

SQL Roadmap: https://t.me/sqlspecialist/1340

Power BI Roadmap: https://t.me/sqlspecialist/1397

Python Resources: https://t.me/pythonproz

Hope it helps :)
โค4๐Ÿ‘4
5 Essential Skills Every Data Analyst Must Master in 2025

Data analytics continues to evolve rapidly, and as a data analyst, it's crucial to stay ahead of the curve. In 2025, the skills that were once optional are now essential to stand out in this competitive field. Here are five must-have skills for every data analyst this year.

1. Data Wrangling & Cleaning:
The ability to clean, organize, and prepare data for analysis is critical. No matter how sophisticated your tools are, they can't work with messy, inconsistent data. Mastering data wranglingโ€”removing duplicates, handling missing values, and standardizing formatsโ€”will help you deliver accurate and actionable insights.

Tools to master: Python (Pandas), R, SQL

2. Advanced Excel Skills:
Excel remains one of the most widely used tools in the data analysis world. Beyond the basics, you should master advanced formulas, pivot tables, and Power Query. Excel continues to be indispensable for quick analyses and prototype dashboards.

Key skills to learn: VLOOKUP, INDEX/MATCH, Power Pivot, advanced charting

3. Data Visualization:
The ability to convey your findings through compelling data visuals is what sets top analysts apart. Learn how to use tools like Tableau, Power BI, or even D3.js for web-based visualization. Your visuals should tell a story thatโ€™s easy for stakeholders to understand at a glance.

Focus areas: Interactive dashboards, storytelling with data, advanced chart types (heat maps, scatter plots)

4. Statistical Analysis & Hypothesis Testing:
Understanding statistics is fundamental for any data analyst. Master concepts like regression analysis, probability theory, and hypothesis testing. This skill will help you not only describe trends but also make data-driven predictions and assess the significance of your findings.

Skills to focus on: T-tests, ANOVA, correlation, regression models

5. Machine Learning Basics:
While you donโ€™t need to be a data scientist, having a basic understanding of machine learning algorithms is increasingly important. Knowledge of supervised vs unsupervised learning, decision trees, and clustering techniques will allow you to push your analysis to the next level.

Begin with: Linear regression, K-means clustering, decision trees (using Python libraries like Scikit-learn)

In 2025, data analysts must embrace a multi-faceted skill set that combines technical expertise, statistical knowledge, and the ability to communicate findings effectively.

Keep learning and adapting to these emerging trends to ensure you're ready for the challenges of tomorrow.

I have curated best 80+ top-notch Data Analytics Resources ๐Ÿ‘‡๐Ÿ‘‡
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02

Like this post for more content like this ๐Ÿ‘โ™ฅ๏ธ

Share with credits: https://t.me/sqlspecialist

Hope it helps :)
โค5
PANDAS
โค9
Python Learning Plan in 2025

|-- Week 1: Introduction to Python
|   |-- Python Basics
|   |   |-- What is Python?
|   |   |-- Installing Python
|   |   |-- Introduction to IDEs (Jupyter, VS Code)
|   |-- Setting up Python Environment
|   |   |-- Anaconda Setup
|   |   |-- Virtual Environments
|   |   |-- Basic Syntax and Data Types
|   |-- First Python Program
|   |   |-- Writing and Running Python Scripts
|   |   |-- Basic Input/Output
|   |   |-- Simple Calculations
|
|-- Week 2: Core Python Concepts
|   |-- Control Structures
|   |   |-- Conditional Statements (if, elif, else)
|   |   |-- Loops (for, while)
|   |   |-- Comprehensions
|   |-- Functions
|   |   |-- Defining Functions
|   |   |-- Function Arguments and Return Values
|   |   |-- Lambda Functions
|   |-- Modules and Packages
|   |   |-- Importing Modules
|   |   |-- Standard Library Overview
|   |   |-- Creating and Using Packages
|
|-- Week 3: Advanced Python Concepts
|   |-- Data Structures
|   |   |-- Lists, Tuples, and Sets
|   |   |-- Dictionaries
|   |   |-- Collections Module
|   |-- File Handling
|   |   |-- Reading and Writing Files
|   |   |-- Working with CSV and JSON
|   |   |-- Context Managers
|   |-- Error Handling
|   |   |-- Exceptions
|   |   |-- Try, Except, Finally
|   |   |-- Custom Exceptions
|
|-- Week 4: Object-Oriented Programming
|   |-- OOP Basics
|   |   |-- Classes and Objects
|   |   |-- Attributes and Methods
|   |   |-- Inheritance
|   |-- Advanced OOP
|   |   |-- Polymorphism
|   |   |-- Encapsulation
|   |   |-- Magic Methods and Operator Overloading
|   |-- Design Patterns
|   |   |-- Singleton
|   |   |-- Factory
|   |   |-- Observer
|
|-- Week 5: Python for Data Analysis
|   |-- NumPy
|   |   |-- Arrays and Vectorization
|   |   |-- Indexing and Slicing
|   |   |-- Mathematical Operations
|   |-- Pandas
|   |   |-- DataFrames and Series
|   |   |-- Data Cleaning and Manipulation
|   |   |-- Merging and Joining Data
|   |-- Matplotlib and Seaborn
|   |   |-- Basic Plotting
|   |   |-- Advanced Visualizations
|   |   |-- Customizing Plots
|
|-- Week 6-8: Specialized Python Libraries
|   |-- Web Development
|   |   |-- Flask Basics
|   |   |-- Django Basics
|   |-- Data Science and Machine Learning
|   |   |-- Scikit-Learn
|   |   |-- TensorFlow and Keras
|   |-- Automation and Scripting
|   |   |-- Automating Tasks with Python
|   |   |-- Web Scraping with BeautifulSoup and Scrapy
|   |-- APIs and RESTful Services
|   |   |-- Working with REST APIs
|   |   |-- Building APIs with Flask/Django
|
|-- Week 9-11: Real-world Applications and Projects
|   |-- Capstone Project
|   |   |-- Project Planning
|   |   |-- Data Collection and Preparation
|   |   |-- Building and Optimizing Models
|   |   |-- Creating and Publishing Reports
|   |-- Case Studies
|   |   |-- Business Use Cases
|   |   |-- Industry-specific Solutions
|   |-- Integration with Other Tools
|   |   |-- Python and SQL
|   |   |-- Python and Excel
|   |   |-- Python and Power BI
|
|-- Week 12: Post-Project Learning
|   |-- Python for Automation
|   |   |-- Automating Daily Tasks
|   |   |-- Scripting with Python
|   |-- Advanced Python Topics
|   |   |-- Asyncio and Concurrency
|   |   |-- Advanced Data Structures
|   |-- Continuing Education
|   |   |-- Advanced Python Techniques
|   |   |-- Community and Forums
|   |   |-- Keeping Up with Updates
|
|-- Resources and Community
|   |-- Online Courses (Coursera, edX, Udemy)
|   |-- Books (Automate the Boring Stuff, Python Crash Course)
|   |-- Python Blogs and Podcasts
|   |-- GitHub Repositories
|   |-- Python Communities (Reddit, Stack Overflow)

Here you can find essential Python Interview Resources๐Ÿ‘‡
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02

Like this post for more resources like this ๐Ÿ‘โ™ฅ๏ธ

Share with credits: https://t.me/sqlspecialist

Hope it helps :)
โค6
6 essential Python functions for file handling:

๐Ÿ”น open(): Opens a file and returns a file object. Essential for reading and writing files

๐Ÿ”น read(): Reads the contents of a file

๐Ÿ”น write(): Writes data to a file. Great for saving output

๐Ÿ”น close(): Closes the file

๐Ÿ”น with open(): Context manager for file operations. Ensures proper file handling

๐Ÿ”น pd.read_excel(): Reads Excel files into a pandas DataFrame. Crucial for working with Excel data
โค6
๐—™๐—ฅ๐—˜๐—˜ ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ๐˜€๐Ÿ˜

๐Ÿš€ Learn In-Demand Tech Skills for Free โ€” Certified by Microsoft!

These free Microsoft-certified online courses are perfect for beginners, students, and professionals looking to upskill

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/3Hio2Vg

Enroll For FREE & Get Certified๐ŸŽ“๏ธ
โค5
Guys, Big Announcement!

Weโ€™ve officially hit 5 Lakh followers on WhatsApp and itโ€™s time to level up together! โค๏ธ

I've launched a Python Learning Series โ€” designed for beginners to those preparing for technical interviews or building real-world projects.

This will be a step-by-step journey โ€” from basics to advanced โ€” with real examples and short quizzes after each topic to help you lock in the concepts.

Hereโ€™s what weโ€™ll cover in the coming days:

Week 1: Python Fundamentals

- Variables & Data Types

- Operators & Expressions

- Conditional Statements (if, elif, else)

- Loops (for, while)

- Functions & Parameters

- Input/Output & Basic Formatting


Week 2: Core Python Skills

- Lists, Tuples, Sets, Dictionaries

- String Manipulation

- List Comprehensions

- File Handling

- Exception Handling


Week 3: Intermediate Python

- Lambda Functions

- Map, Filter, Reduce

- Modules & Packages

- Scope & Global Variables

- Working with Dates & Time


Week 4: OOP & Pythonic Concepts

- Classes & Objects

- Inheritance & Polymorphism

- Decorators (Intro level)

- Generators & Iterators

- Writing Clean & Readable Code


Week 5: Real-World & Interview Prep

- Web Scraping (BeautifulSoup)

- Working with APIs (Requests)

- Automating Tasks

- Data Analysis Basics (Pandas)

- Interview Coding Patterns

You can join our WhatsApp channel to access it for free: https://whatsapp.com/channel/0029VaiM08SDuMRaGKd9Wv0L/1527
โค3
๐Ÿฎ๐Ÿณ ๐—ฅ๐—ฒ๐—ฎ๐—น ๐—ฃ๐—ผ๐˜„๐—ฒ๐—ฟ ๐—•๐—œ ๐—œ๐—ป๐˜๐—ฒ๐—ฟ๐˜ƒ๐—ถ๐—ฒ๐˜„ ๐—ค๐˜‚๐—ฒ๐˜€๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ณ๐—ฟ๐—ผ๐—บ ๐—ง๐—ผ๐—ฝ ๐—–๐—ผ๐—บ๐—ฝ๐—ฎ๐—ป๐—ถ๐—ฒ๐˜€ ๐—Ÿ๐—ถ๐—ธ๐—ฒ ๐—œ๐—•๐— , ๐—–๐—ฎ๐—ฝ๐—ด๐—ฒ๐—บ๐—ถ๐—ป๐—ถ & ๐——๐—ฒ๐—น๐—ผ๐—ถ๐˜๐˜๐—ฒ๐Ÿ˜

This blog brings you 27 real Power BI interview questions asked by top companies like IBM, Capgemini, Deloitte, and more๐Ÿ—ฃ๐Ÿ“Œ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/4dFem3o

Most importantโ€”interview questionsโœ…๏ธ
โค1
5 Essential Skills Every Data Analyst Must Master in 2025

Data analytics continues to evolve rapidly, and as a data analyst, it's crucial to stay ahead of the curve. In 2025, the skills that were once optional are now essential to stand out in this competitive field. Here are five must-have skills for every data analyst this year.

1. Data Wrangling & Cleaning:
The ability to clean, organize, and prepare data for analysis is critical. No matter how sophisticated your tools are, they can't work with messy, inconsistent data. Mastering data wranglingโ€”removing duplicates, handling missing values, and standardizing formatsโ€”will help you deliver accurate and actionable insights.

Tools to master: Python (Pandas), R, SQL

2. Advanced Excel Skills:
Excel remains one of the most widely used tools in the data analysis world. Beyond the basics, you should master advanced formulas, pivot tables, and Power Query. Excel continues to be indispensable for quick analyses and prototype dashboards.

Key skills to learn: VLOOKUP, INDEX/MATCH, Power Pivot, advanced charting

3. Data Visualization:
The ability to convey your findings through compelling data visuals is what sets top analysts apart. Learn how to use tools like Tableau, Power BI, or even D3.js for web-based visualization. Your visuals should tell a story thatโ€™s easy for stakeholders to understand at a glance.

Focus areas: Interactive dashboards, storytelling with data, advanced chart types (heat maps, scatter plots)

4. Statistical Analysis & Hypothesis Testing:
Understanding statistics is fundamental for any data analyst. Master concepts like regression analysis, probability theory, and hypothesis testing. This skill will help you not only describe trends but also make data-driven predictions and assess the significance of your findings.

Skills to focus on: T-tests, ANOVA, correlation, regression models

5. Machine Learning Basics:
While you donโ€™t need to be a data scientist, having a basic understanding of machine learning algorithms is increasingly important. Knowledge of supervised vs unsupervised learning, decision trees, and clustering techniques will allow you to push your analysis to the next level.

Begin with: Linear regression, K-means clustering, decision trees (using Python libraries like Scikit-learn)

In 2025, data analysts must embrace a multi-faceted skill set that combines technical expertise, statistical knowledge, and the ability to communicate findings effectively.

Keep learning and adapting to these emerging trends to ensure you're ready for the challenges of tomorrow.

I have curated best 80+ top-notch Data Analytics Resources ๐Ÿ‘‡๐Ÿ‘‡
https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02

Like this post for more content like this ๐Ÿ‘โ™ฅ๏ธ

Share with credits: https://t.me/sqlspecialist

Hope it helps :)
โค4
๐Ÿฐ ๐—ฃ๐—ผ๐˜„๐—ฒ๐—ฟ๐—ณ๐˜‚๐—น ๐—™๐—ฟ๐—ฒ๐—ฒ ๐—ฅ๐—ผ๐—ฎ๐—ฑ๐—บ๐—ฎ๐—ฝ๐˜€ ๐˜๐—ผ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—๐—ฎ๐˜ƒ๐—ฎ๐—ฆ๐—ฐ๐—ฟ๐—ถ๐—ฝ๐˜, ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ, ๐—”๐—œ/๐— ๐—Ÿ & ๐—™๐—ฟ๐—ผ๐—ป๐˜๐—ฒ๐—ป๐—ฑ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜ ๐Ÿ˜

Learn Tech the Smart Way: Step-by-Step Roadmaps for Beginners๐Ÿš€

Learning tech doesnโ€™t have to be overwhelmingโ€”especially when you have a roadmap to guide you!๐Ÿ“Š๐Ÿ“Œ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/45wfx2V

Enjoy Learning โœ…๏ธ
โค3
Top 4 Python Projects for Beginners

1. To-Do List App: Create a simple to-do list application where users can add, edit, and delete tasks. This project will help you learn about basic data handling and user interface design.

2. Weather App: Build a weather application that allows users to enter a location and see the current weather conditions. This project will introduce you to working with APIs and handling JSON data.

3. Web Scraper: Develop a web scraper that extracts information from a website and saves it to a file or database. This project will teach you about web scraping techniques and data manipulation.

4. Quiz Game: Create a quiz game where users can answer multiple-choice questions and receive a score at the end. This project will help you practice working with functions, loops, and conditional statements in Python.
โค6
๐Ÿฑ ๐—™๐—ฅ๐—˜๐—˜ ๐—ฉ๐—ถ๐—ฟ๐˜๐˜‚๐—ฎ๐—น ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ๐˜€ ๐˜๐—ผ ๐—•๐—ผ๐—ผ๐˜€๐˜ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฑ๐Ÿ˜

Want to build job-ready tech skills from top companies โ€” all for free?๐Ÿ‘จโ€๐ŸŽ“

These 5 virtual experience programs offer hands-on learning, beginner-friendly modules, and certificates that strengthen your resume and LinkedIn profile ๐Ÿ“Š๐Ÿ“Œ

๐‹๐ข๐ง๐ค๐Ÿ‘‡:-

https://pdlink.in/4jnOv16

All The Best ๐ŸŽŠ
โค2
Python Syntax Cheatsheet ๐Ÿ‘†
โค2
Numpy Cheatsheet ๐Ÿ“ฑ
โค5
๐—ง๐—ผ๐—ฝ ๐—–๐—ผ๐—บ๐—ฝ๐—ฎ๐—ป๐—ถ๐—ฒ๐˜€ ๐—›๐—ถ๐—ฟ๐—ถ๐—ป๐—ด ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜€๐˜๐˜€๐Ÿ˜

๐—”๐—ฝ๐—ฝ๐—น๐˜† ๐—Ÿ๐—ถ๐—ป๐—ธ๐˜€:-๐Ÿ‘‡

S&P Global :- https://pdlink.in/3ZddwVz

IBM :- https://pdlink.in/4kDmMKE

TVS Credit :- https://pdlink.in/4mI0JVc

Sutherland :- https://pdlink.in/4mGYBgg

Other Jobs :- https://pdlink.in/44qEIDu

Apply before the link expires ๐Ÿ’ซ