Python for Data Analysts
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Find top Python resources from global universities, cool projects, and learning materials for data analytics.

For promotions: @coderfun

Useful links: heylink.me/DataAnalytics
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๐ŸŽฏ 5 Playlists = 5 courses ๐Ÿ‘‡

1/ Generative AI (freecodecamp): https://youtu.be/mEsleV16qdo?si=PgiaT2kx43xMI78O

2/ Machine Learning (freecodecamp): https://youtu.be/i_LwzRVP7bg?si=iQfXCjLOSLYfVukE

3/ Ethical Hacking: https://youtu.be/Rgvzt0D8bR4?si=W5lskoyT88a18ppU

4/ Data Analytics (WSCube Tech): https://youtu.be/VaSjiJMrq24?si=ipirg6bbI68w7YeF

3/ Cyber Security (WSCube): https://youtu.be/Zdk01t_VTOA?si=MAKJccpTvKrvQ8Td
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Data Visualization with Pandas
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GigaChat 3.5 Ultra Publicly Released โ€” The New Generation of the Flagship Model

The GigaChat team has released GigaChat 3.5 Ultra as open sourceโ€”a new 432B model under the MIT license. This is the first open-source hybrid of GatedDeltaNet and MLA scaled to hundreds of billions of parameters, featuring a proprietary training recipe we refined through more than 1,500 experiments. The model has grown in terms of code, mathematics, agent scenarios, and application domainsโ€”yet itโ€™s 40% smaller than GigaChat 3.1 Ultra.


Whatโ€™s inside:

๐Ÿ”˜A proprietary hybrid MLA + Gated DeltaNet architecture with a dedicated stabilization framework, without which this hybrid setup would not train reliably at this scale;
๐Ÿ”˜ Gated Attention: the model can locally down-weight overly strong signals from the attention layer;
๐Ÿ”˜GatedNorm: normalization with an explicit gate that controls signal magnitude across features;
๐Ÿ”˜Approximately 4x lower KV cache per token: with the same memory budget, the model can support 2.14x longer context and deliver a 20% throughput increase under load;
๐Ÿ”˜Two MTP heads, enabling up to 2.2x faster generation;
๐Ÿ”˜FP8 across all training stages with no quality degradation compared with bf16, enabled by custom Triton and CUDA kernels;
๐Ÿ”˜A new online RL stage after SFT and DPO.

Results:

๐Ÿ”˜ GigaChat-3.5-Ultra-Base outperforms DeepSeek V3.2 Exp Base and DeepSeek V4 Flash Base on average across a set of general, math, and code benchmarks:
๐Ÿ”˜ GigaChat-3.5-Ultra-Instruct is comparable to DeepSeek V3.2 in terms of average score, despite having half the size;
๐Ÿ”˜ According to the MiniMax-M2.7 LLM judge, the average win rate against GigaChat 3.1 Ultra is 75.9%, and against GPT-5 is 68.7%.

The entire stack โ€” data (our own LLM-filtered Common Crawl, 600+ programming languages in the code), architecture, training methodology, and infrastructure โ€” was built end-to-end by GigaChat team.

โžก๏ธ HuggingFace
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๐Ÿ“š Frequently Asked Pandas Interview Questions (Beginner Level)

1๏ธโƒฃ What is the difference between a Series and a DataFrame?

๐Ÿ’ก Answer:

Series โ†’ A one-dimensional labeled array.

DataFrame โ†’ A two-dimensional table with rows and columns.

2๏ธโƒฃ How do you find missing
values in a DataFrame?

๐Ÿ’ก Answer:

df.isnull().sum()
This returns the number of missing values in each column.

3๏ธโƒฃ What is the difference between loc and iloc?

๐Ÿ’ก Answer:

loc โ†’ Label-based indexing.

iloc โ†’ Integer position-based indexing.

4๏ธโƒฃ What is the difference between merge() and concat()?

๐Ÿ’ก Answer:

merge() combines DataFrames using a common key (similar to an SQL JOIN).

concat() combines DataFrames by stacking them vertically or horizontally.

React โ™ฅ๏ธ for more interview questions
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๐Ÿš€ How to Land a Data Analyst Job Without Experience?

Many people asked me this question, so I thought to answer it here to help everyone. Here is the step-by-step approach i would recommend:

โœ… Step 1: Master the Essential Skills

You need to build a strong foundation in:

๐Ÿ”น SQL โ€“ Learn how to extract and manipulate data
๐Ÿ”น Excel โ€“ Master formulas, Pivot Tables, and dashboards
๐Ÿ”น Python โ€“ Focus on Pandas, NumPy, and Matplotlib for data analysis
๐Ÿ”น Power BI/Tableau โ€“ Learn to create interactive dashboards
๐Ÿ”น Statistics & Business Acumen โ€“ Understand data trends and insights

Where to learn?
๐Ÿ“Œ Google Data Analytics Course
๐Ÿ“Œ SQL โ€“ Mode Analytics (Free)
๐Ÿ“Œ Python โ€“ Kaggle or DataCamp


โœ… Step 2: Work on Real-World Projects

Employers care more about what you can do rather than just your degree. Build 3-4 projects to showcase your skills.

๐Ÿ”น Project Ideas:

โœ… Analyze sales data to find profitable products
โœ… Clean messy datasets using SQL or Python
โœ… Build an interactive Power BI dashboard
โœ… Predict customer churn using machine learning (optional)

Use Kaggle, Data.gov, or Google Dataset Search to find free datasets!


โœ… Step 3: Build an Impressive Portfolio

Once you have projects, showcase them! Create:
๐Ÿ“Œ A GitHub repository to store your SQL/Python code
๐Ÿ“Œ A Tableau or Power BI Public Profile for dashboards
๐Ÿ“Œ A Medium or LinkedIn post explaining your projects

A strong portfolio = More job opportunities! ๐Ÿ’ก


โœ… Step 4: Get Hands-On Experience

If you donโ€™t have experience, create your own!
๐Ÿ“Œ Do freelance projects on Upwork/Fiverr
๐Ÿ“Œ Join an internship or volunteer for NGOs
๐Ÿ“Œ Participate in Kaggle competitions
๐Ÿ“Œ Contribute to open-source projects

Real-world practice > Theoretical knowledge!


โœ… Step 5: Optimize Your Resume & LinkedIn Profile

Your resume should highlight:
โœ”๏ธ Skills (SQL, Python, Power BI, etc.)
โœ”๏ธ Projects (Brief descriptions with links)
โœ”๏ธ Certifications (Google Data Analytics, Coursera, etc.)

Bonus Tip:
๐Ÿ”น Write "Data Analyst in Training" on LinkedIn
๐Ÿ”น Start posting insights from your learning journey
๐Ÿ”น Engage with recruiters & join LinkedIn groups


โœ… Step 6: Start Applying for Jobs

Donโ€™t wait for the perfect jobโ€”start applying!
๐Ÿ“Œ Apply on LinkedIn, Indeed, and company websites
๐Ÿ“Œ Network with professionals in the industry
๐Ÿ“Œ Be ready for SQL & Excel assessments

Pro Tip: Even if you donโ€™t meet 100% of the job requirements, apply anyway! Many companies are open to hiring self-taught analysts.

You donโ€™t need a fancy degree to become a Data Analyst. Skills + Projects + Networking = Your job offer!

๐Ÿ”ฅ Your Challenge: Start your first project today and track your progress!

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

Hope it helps :)
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๐“๐ข๐ฉ๐ฌ ๐Ÿ๐จ๐ซ ๐๐ฒ๐ญ๐ก๐จ๐ง ๐‚๐จ๐๐ข๐ง๐  ๐ข๐ง ๐ƒ๐š๐ญ๐š ๐€๐ง๐š๐ฅ๐ฒ๐ญ๐ข๐œ๐ฌ:

๐˜ ๐˜จ๐˜ฆ๐˜ต ๐˜ด๐˜ฐ ๐˜ฎ๐˜ข๐˜ฏ๐˜บ ๐˜ฒ๐˜ถ๐˜ฆ๐˜ด๐˜ต๐˜ช๐˜ฐ๐˜ฏ๐˜ด ๐˜ง๐˜ณ๐˜ฐ๐˜ฎ ๐˜ฅ๐˜ข๐˜ต๐˜ข ๐˜ข๐˜ฏ๐˜ข๐˜ญ๐˜บ๐˜ต๐˜ช๐˜ค๐˜ด ๐˜ข๐˜ด๐˜ฑ๐˜ช๐˜ณ๐˜ข๐˜ฏ๐˜ต๐˜ด ๐˜ข๐˜ฏ๐˜ฅ ๐˜ฑ๐˜ณ๐˜ฐ๐˜ง๐˜ฆ๐˜ด๐˜ด๐˜ช๐˜ฐ๐˜ฏ๐˜ข๐˜ญ๐˜ด ๐˜ฐ๐˜ฏ ๐˜ฉ๐˜ฐ๐˜ธ ๐˜ต๐˜ฐ ๐˜จ๐˜ข๐˜ช๐˜ฏ ๐˜ค๐˜ฐ๐˜ฎ๐˜ฎ๐˜ข๐˜ฏ๐˜ฅ ๐˜ฐ๐˜ง ๐˜—๐˜บ๐˜ต๐˜ฉ๐˜ฐ๐˜ฏ.

๐Ÿ“๐‹๐ž๐š๐ซ๐ง ๐‚๐จ๐ซ๐ž ๐๐ฒ๐ญ๐ก๐จ๐ง ๐‹๐ข๐›๐ซ๐š๐ซ๐ข๐ž๐ฌ: Master Python libraries for data analytics, like
-pandas for dataframes,
-NumPy for numerical operations,
-Matplotlib/Seaborn for plotting,
-scikit-learn for machine learning.

๐Ÿ“๐”๐ง๐๐ž๐ซ๐ฌ๐ญ๐š๐ง๐ ๐‚๐จ๐ง๐œ๐ž๐ฉ๐ญ๐ฌ: Important concepts like list comprehensions, lambda functions, object-oriented programming, and error handling to write efficient code.

๐Ÿ“๐”๐ฌ๐ž ๐๐ซ๐จ๐›๐ฅ๐ž๐ฆ-๐’๐จ๐ฅ๐ฏ๐ข๐ง๐  ๐Œ๐ž๐ญ๐ก๐จ๐๐ฌ: Apply data wrangling techniques, efficient loops, and vectorized operations in NumPy/pandas for optimized performance.

๐Ÿ“๐ƒ๐จ ๐Œ๐จ๐œ๐ค ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: Work on end-to-end Python analytics projectsโ€”data loading, cleaning, analysis, and visualization.

๐Ÿ“๐‹๐ž๐š๐ซ๐ง ๐Ÿ๐ซ๐จ๐ฆ ๐๐š๐ฌ๐ญ ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: Review your previous Python projects to see where your code can be more efficient.

Like this post if you need more resources like this ๐Ÿ‘โค๏ธ
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Complete roadmap to learn Python for data analysis

Step 1: Fundamentals of Python

1. Basics of Python Programming
- Introduction to Python
- Data types (integers, floats, strings, booleans)
- Variables and constants
- Basic operators (arithmetic, comparison, logical)

2. Control Structures
- Conditional statements (if, elif, else)
- Loops (for, while)
- List comprehensions

3. Functions and Modules
- Defining functions
- Function arguments and return values
- Importing modules
- Built-in functions vs. user-defined functions

4. Data Structures
- Lists, tuples, sets, dictionaries
- Manipulating data structures (add, remove, update elements)

Step 2: Advanced Python
1. File Handling
- Reading from and writing to files
- Working with different file formats (txt, csv, json)

2. Error Handling
- Try, except blocks
- Handling exceptions and errors gracefully

3. Object-Oriented Programming (OOP)
- Classes and objects
- Inheritance and polymorphism
- Encapsulation

Step 3: Libraries for Data Analysis
1. NumPy
- Understanding arrays and array operations
- Indexing, slicing, and iterating
- Mathematical functions and statistical operations

2. Pandas
- Series and DataFrames
- Reading and writing data (csv, excel, sql, json)
- Data cleaning and preparation
- Merging, joining, and concatenating data
- Grouping and aggregating data

3. Matplotlib and Seaborn
- Data visualization with Matplotlib
- Plotting different types of graphs (line, bar, scatter, histogram)
- Customizing plots
- Advanced visualizations with Seaborn

Step 4: Data Manipulation and Analysis
1. Data Wrangling
- Handling missing values
- Data transformation
- Feature engineering

2. Exploratory Data Analysis (EDA)
- Descriptive statistics
- Data visualization techniques
- Identifying patterns and outliers

3. Statistical Analysis
- Hypothesis testing
- Correlation and regression analysis
- Probability distributions

Step 5: Advanced Topics
1. Time Series Analysis
- Working with datetime objects
- Time series decomposition
- Forecasting models

2. Machine Learning Basics
- Introduction to machine learning
- Supervised vs. unsupervised learning
- Using Scikit-Learn for machine learning
- Building and evaluating models

3. Big Data and Cloud Computing
- Introduction to big data frameworks (e.g., Hadoop, Spark)
- Using cloud services for data analysis (e.g., AWS, Google Cloud)

Step 6: Practical Projects
1. Hands-on Projects
- Analyzing datasets from Kaggle
- Building interactive dashboards with Plotly or Dash
- Developing end-to-end data analysis projects

2. Collaborative Projects
- Participating in data science competitions
- Contributing to open-source projects

๐Ÿ‘จโ€๐Ÿ’ป FREE Resources to Learn & Practice Python 

1. https://www.freecodecamp.org/learn/data-analysis-with-python/#data-analysis-with-python-course
2. https://www.hackerrank.com/domains/python
3. https://www.hackerearth.com/practice/python/getting-started/numbers/practice-problems/
4. https://t.me/PythonInterviews
5. https://www.w3schools.com/python/python_exercises.asp
6. https://t.me/pythonfreebootcamp/134
7. https://t.me/pythonanalyst
8. https://pythonbasics.org/exercises/
9. https://t.me/pythondevelopersindia/300
10. https://www.geeksforgeeks.org/python-programming-language/learn-python-tutorial
11. https://t.me/pythonspecialist/33

*React โ™ฅ๏ธ for more*
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