Python Function Args Summation

Keyword-only parameters in a #Python function can have a default: def myfunc(*, a, b=10): return f'{a=}, {b=}' Now call it: myfunc(a=5) # use the default myfunc(a=5, b=6) # override the default Remember: parameters with defaults come *after* those without.

Want to check if two #Python #Pandas datetimes are in the same month/quarter/year? Convert them both to periods, and compare with ==: date1.to_period('M') == date2.to_period('M') # same month? date1.to_period('Q') == date2.to_period('Q') # same quarter?

🔢 Python Program: Prime Number ```python num = 7 if num > 1: for i in range(2, num): if num % i == 0: print("Not Prime") break else: print("Prime") ``` 💡 Builds logic thinking #Python #Logic

🧠 Python Trap You’ll Probably Hit Once When you create a list using multiplication like * 3, Python doesn’t create separate inner lists. Instead, it creates multiple references to the same list in memory. So when you modify one, all of them change together. But when you use a list comprehension, each inner list is created independently. That means changes stay isolated, exactly as you’d expect. This small difference is responsible for a lot of confusing bugs, especially in nested data structures. Reference: https://lnkd.in/gWBiknUH #pythonprogramming #learnpython #coding #python

Day 31/100 – #100DaysOfCode 🚀 Solved LeetCode #1346 – Check If N and Its Double Exist (Python). Today I practiced brute-force comparison to check whether there exist two indices i and j such that arr[i] = 2 * arr[j]. Approach: 1) Use two nested loops to check all possible pairs. 2) Ensure that i ≠ j. 3) For each pair, check if arr[i] == 2 * arr[j]. 4) If condition is satisfied, return True. 5) If no such pair is found, return False. Time Complexity: O(n²) Space Complexity: O(1) Starting with brute force helps build understanding before optimization 💪 #LeetCode #Python #DSA #Arrays #BruteForce #ProblemSolving #100DaysOfCode

If a #Python string contains an ISO-formatted date, skip strptime and use datetime.fromisoformat: import datetime as dt dt.datetime.fromisoformat('2026-04-12') # returns datetime at midnight dt.datetime.fromisoformat('2026-04-12 12:34:56') # returns datetime at 12:34:56

Reading a CSV into #Python #Pandas, and parse_dates doesn't recognize the format? Pass the date_format keyword arg: df = pd.read_csv(filename, parse_dates=['x', 'y'], date_format='%Y-%m-%d %H:%M:%S') All strftime codes work!

Want to parse a #Python string into a datetime? Use strptime, passing (a) the string and (b) the date format spec: datetime.datetime.strptime('2026-04-01', '%Y-%m-%d') datetime.datetime.strptime('26-April-01', '%y-%B-%d') Both return datetime.datetime(2026, 4, 1, 0, 0)

🔁 Python Program: Fibonacci Series ```python n = 6 a, b = 0, 1 for _ in range(n): print(a) a, b = b, a + b ``` 💡 Builds strong logic thinking #Python #Logic

Here’s a tiny Python change that pays off fast. Python tip: use `@dataclass(slots=True)` for high-volume models. It removes per-instance `__dict__`, which usually means lower memory usage and slightly faster attribute access. Great for DTOs, parser outputs, event payloads, and cache objects where shape is fixed. Mini rule: if the object schema is stable, add `slots=True` by default. #Python #Performance #CodeQuality #SoftwareEngineering