from collections import Counter

def top_words(path, n=5):
    """Return the n most common words in a text file."""
    try:
        with open(path, encoding="utf-8") as f:
            words = f.read().lower().split()
    except FileNotFoundError:
        print(f"File not found: {path}")
        return []
    return Counter(words).most_common(n)

if __name__ == "__main__":
    print(top_words("notes.txt"))

class Account:
    def __init__(self, owner, balance=0):
        self.owner = owner
        self.balance = balance

    def deposit(self, amount):
        if amount <= 0:
            raise ValueError("Amount must be positive")
        self.balance += amount

    def __repr__(self):
        return f"Account({self.owner!r}, {self.balance})"

acc = Account("Riya")
acc.deposit(500)
print(acc)   # Account('Riya', 500)

# pip install fastapi uvicorn
from fastapi import FastAPI

app = FastAPI()
students = {1: "Aman", 2: "Neha"}

@app.get("/students/{sid}")
def get_student(sid: int):
    return {"id": sid, "name": students.get(sid, "unknown")}

# run: uvicorn main:app --reload
# open: http://127.0.0.1:8000/students/1

git checkout -b feature/login
git add .
git commit -m "Add login form and validation"
git push -u origin feature/login
# open a pull request on GitHub
# after review:
git checkout main
git pull origin main

# file: test_bank.py   run: pytest -q
import pytest
from bank import Account

def test_deposit_adds_money():
    acc = Account("Riya")
    acc.deposit(200)
    assert acc.balance == 200

def test_negative_deposit_fails():
    acc = Account("Riya")
    with pytest.raises(ValueError):
        acc.deposit(-50)

When code fails:
□ Read the full traceback from the bottom up
□ Find the exact line and the variable values
□ Reproduce the bug with the smallest input
□ Form one guess, test it, then change code
□ Add a test so the bug never returns
□ Write what you learned in your notes

Python Developer Skills — Self Rating (1 = new, 5 = confident)
Date: _________

Core Python
  Data types & collections   1 2 3 4 5
  Functions & scope          1 2 3 4 5
  OOP & classes              1 2 3 4 5
  Error handling             1 2 3 4 5

Tools
  Django / Flask / FastAPI   1 2 3 4 5
  SQL                        1 2 3 4 5
  Git & GitHub               1 2 3 4 5

Professional
  pytest                     1 2 3 4 5
  Debugging                  1 2 3 4 5
  Writing READMEs            1 2 3 4 5

Lowest two scores = next focus:
1.
2.

Project Log
Project name: ___________
Problem it solves: ___________
Skills used: Python / framework / SQL / tests
GitHub link: ___________

What worked:
1.
2.

What I would improve:
1.
2.

Tests written: ____
Deployed? Yes / No   Link: ________

Interview Prep Sheet
Topic                    Explained aloud?   Code written?
Mutable vs immutable     ☐                  ☐
List vs tuple vs set     ☐                  ☐
Decorators               ☐                  ☐
Generators               ☐                  ☐
Class vs instance attr   ☐                  ☐
SQL JOIN types           ☐                  ☐
REST basics              ☐                  ☐

Questions I got wrong:
1.
2.
3.