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skills.py

class PythonDeveloper:
    def __init__(self, name):
        self.name = name
        self.skills = []
        self.certificates = []

    def learn(self, topic):
        self.skills.append(topic)
        return f"✅ Learned {topic}!"

    def get_certified(self):
        self.certificates.append("🏆")
        return "Certified!"

dev = PythonDeveloper("You")
print(dev.learn("FastAPI"))|

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Exponential Search

Implement exponential search to find any valid index of a target in a sorted list.

+10 pts Be first Solve →

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Implement division of two integers using only bit shifts and arithmetic, without using division or modulo operators.

+20 pts Be first Solve →

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Write a function that checks if a number is a Harshad (or Niven) number.

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Implement BFS to find the shortest path length from (0,0) to (n-1,n-1) in an n x n binary matrix, moving through 0 cells in 8 directions.

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Write a function that returns items in list a that are not in list b, preserving order and duplicates.

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Find all indexes of a substring

Write a function that returns a list of all starting indexes where a substring appears in a string, including overlapping occurrences.

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Implement a function that deletes a key from a binary search tree and returns the new root.

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Implement a Pipeline class supporting pipe chaining with the | operator.

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Implement helper functions to compose bit masks and check permission bits using bitwise operators.

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Implement a function that finds keys shared by two dictionaries and returns them sorted.

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Write a function that extracts the text inside every double-quoted substring from a given string.

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main.py Preview

# PythonSkillset IDE
def greet(name):
    return f"Hello, {name}!"

print(greet("world"))

Hello, world!

exit 0

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Before

def calculate( x,y ):
    result=x+y
    if result>10:
       print( "Big!" )
    else:
         print( "Small" )
    return result

After

def calculate(x, y):
    result = x + y
    if result > 10:
        print("Big!")
    else:
        print("Small")
    return result

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Why JSON Parsers Differ in Speed and Memory

Explore why Python's standard json module lags behind orjson and ujson in speed and memory. Learn the core optimization principles and when to choose the right parser for …

August 2026 8 min read Read article

Opinion

Python Needs a Standard CLI Framework

An argument for a unified, modern CLI framework in Python's standard library, highlighting the costs of …

August 2026 5 min

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Why Python Is Slow and Why It's Worth It

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