Python · Quick Reference

Phase 2 Projects Cheat Sheet

Python

In one line: Conditionals, loops, lists, dicts, sets, and functions — all working together. Build 4 programs that feel genuinely useful.

Key Ideas

Code Examples

# ══════════════════════════════════════════════
#   Number Guessing Game — Phase 2 Project 1
# ══════════════════════════════════════════════
import random

LEVELS = {
    "easy"  : {"range": (1, 50),  "attempts": 10},
    "medium": {"range": (1, 100), "at...

# ══════════════════════════════════════════════
#   Expense Tracker — Phase 2 Project 2
# ══════════════════════════════════════════════
expenses = []

def add_expense(amount, category, desc):
    """Add an expense record to the list."""
    expenses.appen...

# ══════════════════════════════════════════════
#   Caesar Cipher — Phase 2 Project 3
# ══════════════════════════════════════════════

def shift_char(ch, shift):
    """Shift a single letter by shift positions (preserves case)."""
    if ch.isalpha():
   ...