print("Hello from Python!")

print("Step 1: wake up")
print("Step 2: make coffee")
print("Step 3: learn Python")

print(365 * 24)
print("365 * 24")

print("I can print text")
print(42)
print("I can print several things:", 7, "days", 52, "weeks")

print("Ready", end="... ")
print("steady", end="... ")
print("go!")
print()
print("2026", "10", "09", sep="-")

# This whole line is a comment. Python skips it completely.
print("Comments don't change the output")  # a comment can sit here too
# print("This line is switched off")

city = "Lisbon"
temperature = 24
print(city)
print(temperature)

temperature = 27
print("It is now", temperature, "degrees in", city)

points = 10
points = points + 5
print(points)

hours_slept = 7.5
favourite_band = "The Lumineers"
is_morning_person = False
print(hours_slept, favourite_band, is_morning_person)

Score = 1
score = 2
print(Score, score)

width, height = 4, 3
print("Area:", width * height)

score = 120
print(scroe)

print(score)

print(type(7))
print(type(2.5))
print(type("7"))

print(9 + 4)
print(9 - 4)
print(9 * 4)
print(9 / 4)

cookies = 17
children = 5
print("Each child gets", cookies // children)
print("Left in the jar:", cookies % children)

print(2 ** 10)
print(9 ** 0.5)
print(14 % 2, 15 % 2)

print(2 + 3 * 4)
print((2 + 3) * 4)
print(10 - 2 ** 3 / 4)

steps = 0
steps += 3200
steps += 4500
steps -= 700
print("Steps today:", steps)

bill = 100 / 3
print(bill)
print(round(bill, 2))

print(23 // 4, 23 % 4)

guests = 13
slices_each = 3
slices_per_pizza = 8

slices_needed = guests * slices_each
full_pizzas = slices_needed // slices_per_pizza
slices_short = slices_needed % slices_per_pizza
print(slices_needed, "slices needed")
print(full_pizzas, "full pizzas leaves us", slices_short, "slices short")

pizzas_to_order = full_pizzas + 1
cost = pizzas_to_order * 11.50
print("Order", pizzas_to_order, "pizzas")
print("Total cost:", cost)
print("Cost per guest:", round(cost / guests, 2))

first = "Ada"
last = 'Okafor'
full_name = first + " " + last
print(full_name)
print("-" * 20)

print(len(full_name))
print(full_name.upper())
print(full_name.lower())
print(full_name.replace("Ada", "Grace"))

messy = "   hello WORLD   "
print("[" + messy + "]")
print("[" + messy.strip() + "]")
print(messy.strip().title())

word = "Python"
print(word[0])
print(word[-1])
print(word[0:3])

print("It's a lovely day")
print('She said "wow" and left')
print("Line one\nLine two")
print("Name:\tAda")

sentence = "the cat sat on the mat"
print(sentence.count("at"))
print(sentence.startswith("the"))
print(sentence.find("sat"))

age = 25
print("Age: " + age)

print("Age: " + str(age))
print(f"Age: {age}")

item = "notebook"
price = 3.5
quantity = 4
print(f"{quantity} x {item} costs £{price * quantity}")
print(f"{quantity} x {item.upper()} costs £{price * quantity:.2f}")

print(f"{'Item':<12}{'Price':>8}")
print(f"{'Tea':<12}{1.9:>8.2f}")
print(f"{'Flapjack':<12}{2.25:>8.2f}")
print(f"{1234567:,}")

name = input("What's your name? ")
print(f"Nice to meet you, {name}!")

year = input("What year were you born? ")
print(type(year))

print(2026 - year)

birth_year = int(year)
print(type(birth_year))
print(f"You turn {2026 - birth_year} this year")

height = float(input("Your height in metres? "))
print(f"That's {height * 100} centimetres")
print("Height as text: " + str(height))

guests = int("twelve")

guests = int("12")
print(guests + 1)
print(int(7.9), float(3), str(45) + "6")

name = input("Your name: ")
age = int(input("Your age in years: "))

days = age * 365
heartbeats = days * 24 * 60 * 70
years_asleep = age / 3

print(f"--- {name.title()}'s life in numbers ---")
print(f"Days lived:       about {days:,}")
print(f"Heartbeats:       about {heartbeats:,}")
print(f"Years spent asleep: about {years_asleep:.1f}")

is_raining = True
print(is_raining)
print(type(is_raining))

age = int(input("How old are you? "))
can_vote = age >= 18
print(f"Old enough to vote: {can_vote}")

print(8 > 3)
print(8 < 3)
print(5 == 5)
print(5 != 5)
print(18 >= 18)

password = "sunflower42"
print(password == "Sunflower42")
print(len(password) >= 8)
print("42" in password)

has_ticket = True
has_id = False
print("Both:", has_ticket and has_id)
print("Either:", has_ticket or has_id)
print("No ID:", not has_id)

temperature = 22
print(temperature > 15 and temperature < 28)
print(15 < temperature < 28)

day = "Sunday"
is_weekend = day == "Saturday" or day == "Sunday"
print(f"{day}: weekend? {is_weekend}")

print(5 > 3, 2 > 4)
print(not (5 > 3 and 2 > 4))

battery = 15
if battery < 20:
    print("Battery low! Plug in your phone.")
print("Battery check finished")

battery = 85
if battery < 20:
    print("Battery low! Plug in your phone.")
else:
    print(f"All good: {battery}% left")

wind_speed = 48
if wind_speed < 10:
    print("Calm: perfect for a picnic")
elif wind_speed < 30:
    print("Breezy: fly a kite")
elif wind_speed < 60:
    print("Windy: hold on to your hat")
else:
    print("Storm: stay indoors")

battery = 15
if battery < 20:
print("Battery low!")

battery = 15
if battery < 20:
    print("Battery low!")

username = input("Username: ")
pin = input("PIN: ")
if username == "admin" and pin == "2468":
    print("Welcome back, admin!")
elif username == "admin":
    print("Wrong PIN, try again.")
else:
    print("Unknown user.")

pizzas_to_order = full_pizzas
if slices_short > 0:
    pizzas_to_order += 1
print(f"Order {pizzas_to_order} pizzas for {guests} guests")

age = int(input("How old are you? "))
day = input("What day is it? ").strip().lower()
student = input("Are you a student? (yes/no) ").strip().lower() == "yes"

if age < 12:
    price = 6.00
elif age >= 65:
    price = 7.50
elif student:
    price = 11.00 - 2.00
else:
    price = 11.00

if day == "tuesday":
    price = price * 0.7
print(f"Your ticket costs £{price:.2f}")

countdown = 5
while countdown > 0:
    print(countdown)
    countdown -= 1
print("Lift off!")

savings = 0
week = 0
while savings < 100:
    week += 1
    savings += 15
    print(f"Week {week}: £{savings}")
print(f"Goal reached in {week} weeks!")

while True:
    word = input("Type a word (or stop): ")
    if word == "stop":
        break
    print(f"{word} has {len(word)} letters")
print("Bye!")

code = input("Choose a 4-digit door code: ")
while len(code) != 4 or not code.isdigit():
    print("  That's not 4 digits.")
    code = input("Choose a 4-digit door code: ")
print(f"Door code set to {code}")

for number in range(5):
    print(number)

for lap in range(1, 4):
    print(f"Lap {lap} complete")

for minute in range(0, 31, 10):
    print(f"{minute} minutes in")

for letter in "loop":
    print(letter.upper(), end=" ")

n = 7
for i in range(1, 11):
    print(f"{n} x {i:>2} = {n * i:>3}")

total = 0
for number in range(1, 101):
    total += number
print(f"1 + 2 + ... + 100 = {total}")

for row in range(1, 6):
    print(" " * (5 - row) + "*" * (2 * row - 1))

for x in range(2, 10, 3):
    print(x)

for day in range(1, 8):
    if day % 2 == 0:
        print(f"Day {day}: rest")
    else:
        print(f"Day {day}: run {day + 1} km")

playlist = ["Morning Light", "City Rain", "Night Drive"]
print(playlist)
print(len(playlist))
print(playlist[0])
print(playlist[-1])

playlist.append("Sunset Walk")
playlist[1] = "City Rain (Remix)"
print(playlist)
print(len(playlist))

print(playlist[4])

print(playlist[3])
print(playlist[len(playlist) - 1])

for song in playlist:
    print(f"Now playing: {song}")

for position, song in enumerate(playlist, start=1):
    print(f"{position}. {song}")

scores = [72, 88, 95, 64, 81]
print(f"Highest: {max(scores)}, lowest: {min(scores)}")
print(f"Average: {sum(scores) / len(scores)}")
print(95 in scores, 100 in scores)

squares = []
for n in range(1, 7):
    squares.append(n ** 2)
print(squares)

passed = []
for score in scores:
    if score >= 80:
        passed.append(score)
print(f"{len(passed)} of {len(scores)} passed: {passed}")

shopping = ["milk", "eggs", "bread", "apples"]
shopping.remove("eggs")
shopping.sort()
print(shopping)

harbour = (38.69, -9.21)
print(harbour[0])
latitude, longitude = harbour
print(f"Latitude {latitude}, longitude {longitude}")

orange = (255, 165, 0)
red, green, blue = orange
print(f"Red {red}, green {green}, blue {blue}")
print(len(orange), type(orange))

week = [("Mon", 6200), ("Tue", 9800), ("Wed", 4100),
        ("Thu", 11300), ("Fri", 7600)]
for day, steps in week:
    bar = "#" * (steps // 500)
    print(f"{day} {steps:>6,} {bar}")

menu = [("coffee", 2.80), ("tea", 1.90), ("croissant", 2.40),
        ("bagel", 3.20), ("smoothie", 4.50)]

print("=== THE CORNER CAFE ===")
for item, price in menu:
    print(f"  {item.title():<12} £{price:.2f}")

order = []
while True:
    choice = input("What would you like? (or done) ").strip().lower()
    if choice == "done":
        break
    price = 0
    for item, item_price in menu:
        if item == choice:
            price = item_price
    if price == 0:
        print(f"  Sorry, we don't sell {choice}.")
    else:
        quantity = int(input(f"How many {choice}? "))
        order.append((choice, quantity, price))
        print(f"  Added {quantity} x {choice}")
print(f"Items in order: {len(order)}")

subtotal = 0
print("-" * 11, "RECEIPT", "-" * 10)
for item, quantity, price in order:
    line_total = quantity * price
    subtotal += line_total
    print(f"{quantity} x {item:<20}{line_total:>6.2f}")
print("-" * 30)
print(f"{'Subtotal':<24}{subtotal:>6.2f}")

member = input("Loyalty card? (yes/no) ").strip().lower() == "yes"
discount = 0
if member and subtotal >= 10:
    discount = subtotal * 0.10
elif member:
    print("  Spend £10 or more to unlock your 10% discount")
total = subtotal - discount
print(f"{'Discount':<24}{-discount:>6.2f}")
print(f"{'TOTAL (£)':<24}{total:>6.2f}")

paid = float(input("Cash handed over: £"))
while paid < total:
    print(f"  Still £{total - paid:.2f} to pay")
    paid += float(input("More cash: £"))
print(f"Change: £{paid - total:.2f}")
print("Thank you for visiting The Corner Cafe!")

items_bought = 0
for item, quantity, price in order:
    items_bought += quantity
print(f"You bought {items_bought} items today.")
if items_bought >= 4:
    print("You've earned a stamp on your coffee card!")