Python "Gotchas": Are you using mutable default arguments correctly? 🐍 In Python, default arguments are evaluated only once at the time of function definition, not every time the function is called. This can lead to unexpected "shared state" bugs that are a nightmare to debug in production. In this video, I break down: ✅ The common mistake with list=[] ✅ Why to=None is the industry standard fix ✅ How to write cleaner, bug-free Python code Have you ever been bitten by this specific Python behavior? Let’s discuss in the comments. #Python #SoftwareDevelopment #Programming #DataScience #CleanCode #TechTips
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Rules for declaring python veriables:- 1) Must start with letters (a-z, A-Z) or underscore _ 2)Must not start with numbers (1 to .... ) 3) Variables are case sensitive ( python and Python both are different) 4) We cannot use keywords as variables ( if, def, while ...) Variable declaration is main part of any program. First impression will be starting with it, so while declaring variables need to take care. #python #learn #fast #beginner #automation
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Day 5/100 – Python Today I worked on swapping two numbers in Python. At first, it looked like a simple problem, but it actually helped me understand an important concept — how to move data without losing it. I explored two approaches: 🔹 Using a third variable (temporary storage) 🔹 Swapping directly using Python’s tuple unpacking What I learned today: ✔ Importance of preserving data before overwriting ✔ How execution order affects the result ✔ Cleaner and more efficient ways to write code in Python ✔ Understanding how Python handles multiple assignments internally #100DaysOfCode #Python #DSA #ProblemSolving #LearningInPublic
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Python Tip of the Day 🐍 Choosing the right file mode in Python is more important than it seems. w and w+ may look similar, but they serve different purposes: w → Write only w+ → Write + Read Both modes create the file if it doesn’t exist and overwrite existing data, which makes them powerful—but also risky if used carelessly. Day 43 of building Python basics #Python #FileHandling #LearnPython #ProgrammingBasics #PythonTips
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Learn how to safely handle missing files in Python. When you try to open a file that does not exist in read mode, Python raises a FileNotFoundError. In this quick tutorial, you will see how to use a try except block to catch the error, create the file automatically, and keep your program running smoothly. This is perfect for beginners and real world applications like logs, configuration files, and user data. Master file handling in Python in under 90 seconds. #python #shorts #pythonerror #FileNotFoundError #exceptionhandling #tryexcept #filehandling #pythontutorial #learnpython #codingforbeginners #errorhandling #programmingtips #pythonprogramming #automation #codingshorts #fyp #viral #softwaredevelopment #pythonbasics #debugging
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Python Tip of the Day 🐍 Understanding file modes is essential before working with files in Python. The difference between r and r+ may look small, but it changes how your program behaves. r → Read-only (file must exist) r+ → Read & write (no file creation) Day 42 of building Python basics #Python #FileHandling #LearnPython #ProgrammingBasics #PythonTips
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The most misunderstood line of code in Python🛑 if __name__ == "__main__" Most beginners copy-paste this without knowing what it actually does. If you've ever imported a file and had your entire script execute unexpectedly—this is why. In this 2-minute breakdown, I explain: ✅ What __name__ actually stores. ✅ Why your code runs differently when imported vs. executed. ✅ How to structure your scripts like a Senior Dev. Master the most misunderstood line in Python here: https://lnkd.in/e5gEGpYq #python #codingtips #backend #microlearn #pythonifnamemain
Python if __name__ == "__main__" Deeply Explained | The Most Misunderstood Line in Python
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Python Clarity Series – Episode 22 Topic: == None vs is None 📌 Checking None the wrong way: if x == None: Works… but not recommended. 👉 Correct way: if x is None: 💡 Why? None is a singleton object 👉 is checks identity (correct here) 👉 == checks value 💡 Rule: Use is None, not == None This is considered best practice in Python. Small detail → Strong coding habit #PythonBestPractices #CleanCode #DeveloperThinking #python #clarityseries
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Evaluating Expressions in Python using eval() While practicing on HackerRank, I explored the power of Python’s built-in eval() function. *Problem Statement: Read a mathematical expression from input and evaluate its result. Solution: # Enter your code here. Read input from STDIN. Print output to STDOUT expression = input() print(eval(expression)) * How it works: input() takes the expression as a string (e.g., "3 + 5 * 2") eval() evaluates the string as a Python expression The result is printed directly Example: Input: 3 + 5 * 2 Output: 13 *Important Note: eval() is powerful but should be used carefully, as it can execute arbitrary code. It’s safe in controlled environments like coding platforms, but not recommended for untrusted input in real-world applications. -> Always exciting to learn how Python simplifies complex tasks with minimal code! #Python #HackerRank #CodingPractice #Programming #LearnToCode #100DaysOfCode
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