Python Data Types: Text, Numbers, and More

The most in-demand data skill in 2026 isn't Python. It's knowing how to explain your work to someone who doesn't code. Communication is the career multiplier nobody talks about. Here are 3 ways to sharpen it: Before any presentation, write one sentence that captures the 'so what' lead with that. Replace jargon with analogies. If your stakeholder runs a bakery, explain your model like a recipe. Practice saying 'what this means for us is...' before every finding, it forces you to think in decisions, not data. What skill do you wish you'd developed earlier in your career?

I used to think Python was just about writing code. That changed when I started working with libraries. Once I got into NumPy, Pandas, and the rest, I realized it’s less about coding and more about solving problems with the right tools. Each library started to click in its own way: • Pandas → messy, real-world data that needs cleaning and shaping • NumPy → handling performance-heavy numerical operations • Matplotlib & Seaborn → actually understanding what the data is saying • Scikit-learn → taking it a step further with predictions But the biggest shift? Not just learning the libraries… 👉 Learning when to use which one That’s what made everything start to make sense. I’m still learning, but now I approach problems differently: Not “how do I code this?” But “what’s the right tool for this?” Curious - what’s the one Python library you use the most, and why? #Python #DataAnalytics #MachineLearning #Libraries

🚀 Python Series – Day 14: File Handling (Read & Write Files) Yesterday, we explored advanced concepts in functions. Today, let’s learn something super practical — how Python works with files 📂 🧠 What is File Handling? File handling allows you to: ✔️ Read data from files ✔️ Write data to files ✔️ Store information permanently 👉 Used in real-world projects like logs, data storage, reports, etc. 📂 Step 1: Open a File file = open("demo.txt", "r") 👉 Modes: "r" → Read "w" → Write (overwrites file) "a" → Append "x" → Create new file 📖 Step 2: Read a File file = open("demo.txt", "r") print(file.read()) file.close() ✍️ Step 3: Write to a File file = open("demo.txt", "w") file.write("Hello, Python!") file.close() ➕ Step 4: Append Data file = open("demo.txt", "a") file.write("\nLearning File Handling 🚀") file.close() 🔥 Best Practice (Important!) Use with statement (auto closes file): with open("demo.txt", "r") as file: data = file.read() print(data) 🎯 Why This is Important? ✔️ Used in data science (CSV, logs) ✔️ Used in real-world applications ✔️ Helps manage large data ⚠️ Pro Tip: Always close files OR use with 👉 Otherwise it may cause memory issues 📌 Tomorrow: Exception Handling (Handle Errors Like a Pro!) Follow me to master Python step-by-step 🚀 #Python #Coding #Programming #DataScience #LearnPython #100DaysOfCode #Tech #MustaqeemSiddiqui

Day 9: Python Functions as First-Class Citizens ⚙️ Mastering neat, organized code is critical for Machine Learning pipelines. Today, I did a deep dive into Python Functions, focusing on how to organize code and how Python uses computer memory: Functional Programming: Functions behave like regular data (numbers or strings). I practiced storing them in variables, giving them as inputs to other functions, and having functions create new functions. This makes processing data in steps much easier. Decomposition & Abstraction: Moving past one giant block of code to build separate "boxes" for specific tasks (like separate sections for loading data, cleaning it, and training the AI model). I focused on writing clear instructions (docstrings) inside each one. Scoping & Frame Stack: Learned exactly how Python keeps track of where variables "live." A variable created inside a function is kept separate from variables outside, preventing accidental mistakes and data mix-ups. ⚡ Arbitrary Arguments (*args): Used *args to create super flexible functions that can accept any amount of inputs. This is crucial when you don't know exactly how much data you will get, ensuring the script doesn't crash. Moving from code that "works" to code that is neat, well-documented, and ready for production. 📈 #Python #LearningInPublic #ArtificialIntelligence #SoftwareEngineering #DataPipelines #Modularity #100DaysOfCode

Most data analysts know Python. But not everyone uses it effectively. This image covers some advanced Pandas techniques, and honestly, these are the kind of things that make a real difference in day-to-day work. Not because they’re “advanced", but because they make your code cleaner, faster, and easier to maintain What stood out to me is Instead of writing long, step-by-step transformations, you can chain operations for cleaner pipelines, use vectorized calculations instead of loops, and combine multiple aggregations in a single step. Also, small things matter more than we think: 🔺 selecting only required columns 🔺 handling missing data thoughtfully 🔺 using proper joins instead of manual merges These don’t sound fancy, but they save a lot of time in real projects. 𝐈'𝐦 𝐡𝐨𝐬𝐭𝐢𝐧𝐠 𝐚 𝐰𝐞𝐛𝐢𝐧𝐚𝐫 𝐨𝐧 𝐀𝐩𝐫𝐢𝐥 26. 𝐌𝐨𝐫𝐞 𝐝𝐞𝐭𝐚𝐢𝐥𝐬 𝐡𝐞𝐫𝐞: 👇 https://lnkd.in/gXQZCDV8 Visual Credits: Sohan Sethi 𝑾𝒂𝒏𝒕 𝒕𝒐 𝒄𝒐𝒏𝒏𝒆𝒄𝒕 𝒘𝒊𝒕𝒉 𝒎𝒆? 𝘍𝒊𝒏𝒅 𝒎𝒆 𝒉𝒆𝒓𝒆 --> https://lnkd.in/dTK-FtG3 Follow Shreya Khandelwal for more such content. ************************************************************************ #Python #DataScience #Pandas #Analytics

Little-Known Ways to Save Time with Python in Power BI It All Started with a Single Script... If you want to perform imputation, run statistical analysis, or dive into machine learning, you need external tools. That is where Python integration changes the game. Python can fetch data without native connectors, perform fuzzy matching, create custom visuals like correlation heatmaps or violin plots, and run machine learning models. Python fills the gaps that standard tools cannot. Here is the link to the article with details: https://lnkd.in/deYr5JWi P.S. I share data analytics tips and my experience in a free newsletter. Join here: https://lnkd.in/d79Zv532

I used to think Data Structures were just a hard exam topic. Then StemLink lectures showed me how they actually work in Python — and everything changed. 🐍 Here's what I learned, broken down simply 👇 --- 🔷 The 4 main data structures in Python: 📋 Lists → ordered, mutable, most used   mylist = []   mylist.append("item")  # add to end   mylist.sort()      # sort in place 📖 Dictionaries → key-value pairs, O(1) lookup   user = {"name": "Abiya", "age": 20} 🔸 Tuples → like lists but NOT mutable   coords = (6.9, 79.8)  # can't change this 🔹 Sets → unique values only, no duplicates   tags = {"python", "dsa", "python"} # stores only once --- 🔷 How data lives inside structures: Everything stored inside these is called an Element. Elements are ordered in groups → accessed using Indexes. mylist[0]    # first item mylist[-1]    # last item mylist[0:3]   # slice from 0 to 2 --- 🔷 How we move through data: Loops + Indexes work together to iterate through elements. for elem in mylist:   # loop through every item   print(elem) mylist[int] = x     # modify by assignment --- 🔷 The big insight: Lists are the most popular data structure in Python. They connect everything — elements, loops, indexes, methods, and assignment — all in one place. Once you understand Lists deeply, the rest makes sense. These fundamentals go directly into the projects I build. Not just theory. Real code. Which Python data structure do you use the most? 👇 #Python #DSA #DataStructures #StemLink #IITColombo #LearnToCode #CS #StudentDeveloper #BuildInPublic #Programming

In large organizations, transitioning repetitive reporting tasks from Excel to Python isn’t just a technical upgrade, it’s a scalability decision. As data volume and complexity grow, automation, version control, and reproducibility become critical. Excel remains powerful for quick insights, but Python ensures consistency, auditability, and long-term efficiency across teams.

Stop the Excel vs. Python war. Here is the actual answer: Use Excel when: ✅ Your audience only knows Excel ✅ The dataset fits in rows you can see ✅ Speed of delivery beats reproducibility Use Python when: ✅ The same report runs every week ✅ Data has 100k+ rows ✅ You need auditability and version control Use BOTH when: ✅ You want a job in 2025 The best analysts do not pick sides. They pick the right tool. Tool tribalism is the enemy of good analysis. Master both. Charge more. Ship faster. Which tool do YOU default to — and why? Let's debate 👇 #Excel #Python #DataAnalysis #DataScience #Analytics

Technical post: I've been posting some graphs on here, talking about functions and "equivalence". This was all started by working on porting an MLOPs framework from python 3.10 to 3.12, and all the "dependency hell" one has to go through. Then naturally the question arose "What are the boundaries of one project to another, in terms of functions being called etc.,?" This led me down the rabbit hole (not too deep) of what happens when I do something like python -m <module> <somescript>. Specifically, what is a "no op" module, and what kind of ops can we inject, thanks to python being an interpreted language. A few years ago I'd worked on something along similar lines called TracePath, which provided a decorator to do something similar (e.g. who called who, how long it took, etc.). So I merged these two ideas (avoid decorating every function, have an "inspector" module) and ran this on a simple pandas dataframe creation. The resulting function invocation graph is the image attached to this post. When I ran it across the whole workflow (create, load, transform data etc.,), the graph had ~9000 connections. The nice thing is I can specify which modules (e.g. only pandas, or pandas and numpy) should be added to the graph etc. What do you think is the next logical thing to do with something like this? What kind of graphs would well structured software produce? How about badly written software? #graphs #swe #dependencyhell #python