Pawel Jastrzebski

All the Ways to Create New Figure and Axes in Matplotlib With clear use cases and code examples

My latest blog covering all the possibilities for creating Axes in Matplotlib + use cases + easy to follow examples.

Give it a read.

medium.com/@pawjast/all...

How to Use Pandas Categorical Data for Better Data Labelling A hands on guide

I just published How to Use Pandas Categorical Data for Better Data Labelling medium.com/p/how-to-use...

Elegant Data Cleaning: The Power of the `.str` Method Stop Fighting with Messy Column Names: A Pandas .str Tutorial

In my latest blog I'm discussing how to clean the column names in Pandas DataFrame so the subsequent data analysis is easier to carry out.

Check it out!

medium.com/gitconnected...

My Top 3 Programming Articles In 2025 With presentation, views, reads and earnings revealed

End of the year recap - my top 3 Python articles.

Enjoy.

medium.com/@pawjast/my-...

3 Powerful Ways to Add Labelled Columns in Pandas Explained A Guide to selecting, cutting and mapping

Here's my latest Medium piece where I describe 3 different ways of adding labelled columns to Pandas DataFrame.

Enjoy.

medium.com/gitconnected...

A Beginner’s Guide to Math and Calculations in Core Python We’ve got 7 Python module at our disposal!

7.

That's how many modules there is in Python to help you with maths.

Check out my latest blog where I briefly introduce them all.

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3 Creative Ways to Draw a Chessboard In Python Using Matplotlib

My latest Medium blog post where I show 3 ways to create a chessboard with... Python and Matplotlib :)

medium.com/gitconnected...

I didn't know about the backslash - cool, thanks!

4 Basic Markdown Commands I Use Non-stop Dramatically improve the appearance of your documents in the next 5 mins!

My latest blog post that will teach you 4 fundamental markdown commands in the next 5 mins.

Test me ;)

medium.com/gitconnected...

I haven't published anything since April.

So I'm happy to have my latest article finally out.

This time I'm talking about the fundamental concepts in Statistics.

Enjoy.

Ihttps://medium.com/gitconnected/friendly-guide-on-basic-statistics-concepts-to-master-9ce9f1a2d4d4

A Friendly Guide To Starting Dataviz With Python - Pacific Dataviz Challenge Webinar (June 2025) This is deck of slides for the webinar talk I've given at the 4th edition of the Pacific Dataviz Challenge in June 2025.It provides a basic definition and purpose of a data visualization, categorizes ...

And the link to the slides which are available for a download is down below:

pawjast.gumroad.com/l/pacific-da...

Webinar - A Friendly Guide To Starting Dataviz with Python at Pacific Dataviz Challenge YouTube video by Pawel Jastrzebski

I was presenting at the Pacific Dataviz Challenge webinar last night and if you want to know how I did, check the link below.

youtu.be/fQF4iud99Wc?...

Pawel Jastrzebski – Medium Read writing from Pawel Jastrzebski on Medium. I use Python 🐍 and Inkscape 🗻 for data viz 🖼 • matplotlib fan • I share tips, tutorials & articles - let me teach you something • Don't be a stranger 👋.

Any tech Medium bloggers here?

Let's connect.

I'm at:

medium.com/@pawjast

Shapely 101: An Easy Guide on Making Polygons Learn through following practical examples.

Another article on Python's Shapely.

This time I'm explaining the Polygons.

medium.com/gitconnected...

The Python Coding Book: A relaxed and friendly programming textbook for beginners The Python Coding Book: A relaxed and friendly programming textbook for beginners [Gruppetta, Stephen] on Amazon.com. *FREE* shipping on qualifying offers. The Python Coding Book: A relaxed and friendly programming textbook for beginners

Anyone in my network here on Bluesky has read The Python Coding Book and used it as part of their Python learning?

The Amazon overlords would love a review from you–then they'll make sure others can enjoy it, too

amzn.to/4ckRfta

Shapely 101: A Beginner’s Guide to Points, Lines, and Polygons An easy intro into geo analysis with Python

This time I'm talking about Python package for geo analysis: shapely.

levelup.gitconnected.com/shapely-101-...

Must-Know Python Data Analysis Tools to Learn in 2025 This is a second article in a 3 part series.

My thoughts on the tools required for effective data analysis with Python.

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pawjast I'm a data analyst using Python for my main tool. Also interested in data visualization, open source and Linux. I'm currently learning how to build web apps with Flask. Let's connect!

Here's my (very modest at the moment) YT channel if you'd like to support me:

youtube.com/@pawjast?si=...

Advanced Data Visualisation - PyData Kampala talk slides (Feb 2025) This is deck of slides for the talk I've given at PyData Kampala in February 2025.It covers advanced data visualization in the context of data analysis workflow.

The slides are available as a free download from here:

pawjast.gumroad.com/l/pydata_kam...

Talk - Advanced Data Visualization at PyData Kampala YouTube video by pawjast

I've recently had a chance to give a short talk on Advanced Data Visualization for PyData Kampala.

See below the recording of my talk.

Enjoy!

youtu.be/BwPFwyf4N4A

So I’ve Finally Read the “Atomic Habits” And here are some thoughts on the book

My latest blog post - non programming this time round:

medium.com/@pawjast/so-...

3 Silly Mistakes to Avoid When Parametrizing Unit Tests with pytest

My latest blog post on some problems with parametrized unit testing.

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Congrats 🎉

Here are the Top Six articles on The Python Coding Stack…

links below…

Transform List of Point Coordinates to Vectors With Ease A key step for being able to plot the points correctly.

My latest Python blog.

medium.com/gitconnected...

I’ve Asked Grok to Create Python Logo Using styles of different painters.

Coffee break light reading from me today.

medium.com/@pawjast/ive...

How I’ve Finally Made My First Matplotlib Animation And now I can teach you how to do it too.

If you're on Medium, you might want to read my latest tutorial on how to get started with making animations with Python and Matplotlib.

medium.com/gitconnected...

Help me share this widely for the sake of all those teenagers or nearly-teenagers who don’t know what to do with all their free time over the holidays.

Plus: everyone loves free stuff

4 Key Unit Testing Concepts Explained Have your code tested and documented using best techniques.

Unit testing in Python and some important concepts to learn.

levelup.gitconnected.com/4-key-unit-t...

3 reasons you should become a Python conference speaker US PyCon 2025 call for proposals in now open

My latest Medium article.

levelup.gitconnected.com/3-reasons-yo...