🐍📺Check if a Python String Contains a Substring [Video] In this video course, you'll learn to check whether a string contains a substring. You'll also learn about idiomatic ways to inspect a substring further and search for substrings in pandas #python
Python String Substring Check
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I would like to share this moment with you: I have successfully published my first Python project. It is a simple cookbook and can be installed using the following link: https://lnkd.in/dQU_QQSA
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Python Practice: Split & Join Strings I recently solved a basic yet important problem from HackerRank using Python. Problem: Given a string of space-separated words, split the string and join the words using a hyphen (-). Solution: def split_and_join(line): words = line.split(" ") # split string into list result = "-".join(words) # join list with hyphen return result if __name__ == '__main__': line = input() result = split_and_join(line) print(result) Key Concepts: split() → Converts a string into a list join() → Combines list elements into a string Clean function design for reusability if __name__ == '__main__' for proper execution structure Example: Input: this is a string Output: this-is-a-string What I learned: Even simple problems help build strong fundamentals in string manipulation and writing clean, structured Python code. #Python #CodingPractice #HackerRank #Programming #100DaysOfCode #LearningJourney
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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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Do you know the difference between @staticmethod and @classmethod in Python? Most beginners use one or the other without fully understanding why. @staticmethod does not receive any implicit argument. It belongs to the class only for organisational purposes — it could live anywhere, but it makes sense to keep it there. @classmethod receives the class itself as the first argument, conventionally called cls. This means it can access and modify class-level data. The rule is simple: if the method needs the class, use @classmethod. If it needs nothing, use @staticmethod. In the image below you can see both methods applied to the same class. validate_email does not need to know anything about the class — it just validates a string. increment_count needs access to user_count, which belongs to the class itself, not to any specific instance. 💭 Have you ever used one when you should have used the other? #Python #Backend #PythonDeveloper #BuildingInPublic #HKingsJourney
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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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> substring in string There you go, you don't need a whole course.