Learn Git in a Day

cat << 'EOF' > calculator.py
# calculator.py - A simple calculator

def add(a, b):
    """Add two numbers and return the result."""
    return a + b

def subtract(a, b):
    """Subtract b from a and return the result."""
    return a - b

def multiply(a, b):
    """Multiply two numbers and return the result."""
    return a * b

# Try it out
result_add = add(5, 3)
result_sub = subtract(10, 4)
result_mul = multiply(6, 7)
print(f"5 + 3 = {result_add}")
print(f"10 - 4 = {result_sub}")
print(f"6 * 7 = {result_mul}")
EOF

git add calculator.py