Sergei Kotov | Python Made Simple
@kotov_dev
Full-stack dev & course author. 10K+ paid students. Simplifying Python concepts, learning discipline & motivation.
When I learned OOP, every book used Dog, Cat, and Animal classes. I thought: "Classes must model real-world objects." Later, I saw code with classes like: › AuthenticationHandler › DataSerializer › CacheManager Eureka! Classes aren't just mirrors of reality—they're…
"Skip tutorials, just build" is like "skip driving lessons, just drive." You don't need to be an expert to start building, but you need the basics.
2 important things about and/or Python operators that most beginners miss: › Short-circuit evaluation — stops as soon as the result is determined. For example, False and x never evaluates x. › Return actual values, not True/False — and returns the first falsy value or the…
Programming isn't hard because of syntax. It's hard because you need to break messy human problems into precise steps a computer can execute.
5 things about else every Python beginner should know: › Loops: runs if no break (optional) › if-elif-else: must be last (optional) › try-except: runs if no exception (optional) › Ternary: always required › Same word, multiple contexts
Procrastination hack that actually works for me: When I can't get myself to work, I change locations. Office → cafe, home → public library, desk → couch. New place = mental reset. Works every time. Well, almost. Sometimes I fall asleep on the couch.
In the new AI world, you can't be just a tech person. You need to: › Organize yourself without a babysitter › See the full picture, not just your piece › Advise clients on what's actually best for them Be someone who's truly involved, not just a code machine. That's how you…
Dear Python beginners: Learn SQL before pandas. Better yet—skip pandas. Learn to interact with APIs and write your own.
It's easy to start with Python, but hard to truly master it. You can write working code—even full projects—in days. But the depth of concepts, libraries, patterns, and best practices means you'll be learning for years. That's the cool part: there's always more to discover.
Typical non-tech person discovers ChatGPT: › Wow! It replies like a human! › It can create cat images! › Even cat videos! "This will replace programmers."
If you're not an engineer, "prompt engineering" doesn't make you one.
Reading books expands your mind in ways AI summaries never will. You're not reading for facts—you're reading to think differently.
In Python, variables are references to objects. There is no "pass by reference" vs. "pass by value" like in other languages—you're always passing references.
Want to learn programming? Forget motivation. Build a ritual. Code every single day. Consistency beats inspiration every time.
Don't convert iterators to lists just for slicing. Use islice from itertools instead. Same result, fraction of the memory cost:
When debugging, be a sniffer dog—focus narrowly, follow the scent. When designing software, be a general—think broadly, plan strategically.
Worried a big company will steal your idea? Reality check: › They need to notice you first › You need to be profitable enough to matter › If you succeed, they'll probably try to buy you, not crush you Don't let fear stop you from starting. Hollywood has infinite money and…
Early programming memory: Spent weeks figuring out how to make two stars move toward each other. When the loop finally worked, the feeling was irreplaceable. Nothing beats the pleasure of understanding.
You can't afford panic when prod is down. You wouldn't want a surgeon who panics during surgery. Be the calm one. Debug methodically. Panic only makes it worse.
After countless hours of debugging, I've learned one truth: In 100% of cases, the human is guilty, not the computer.
I've learned countless times that pencil and paper are the best debugging and problem-solving tools. Well, at least a pencil.
United States Trendy
- 1. Penn State 23.2K posts
- 2. Indiana 38.7K posts
- 3. Mendoza 20.2K posts
- 4. Gus Johnson 6,764 posts
- 5. #UFCVegas111 5,107 posts
- 6. #iufb 4,197 posts
- 7. Sayin 69.2K posts
- 8. Omar Cooper 9,572 posts
- 9. Iowa 19.5K posts
- 10. Estevao 39.1K posts
- 11. Josh Hokit N/A
- 12. Sunderland 155K posts
- 13. Mizzou 3,730 posts
- 14. Kirby Moore N/A
- 15. Texas Tech 13.9K posts
- 16. Jim Knowles N/A
- 17. Happy Valley 1,908 posts
- 18. James Franklin 8,851 posts
- 19. Carter Smith N/A
- 20. Oregon 33.7K posts
Something went wrong.
Something went wrong.