Command reference

age = int(input("How old are you? "))
print("In 10 years you will be", age + 10)

import time

for i in range(5, 0, -1):
    print(i)
    time.sleep(1)
print("Go!")

import turtle

t = turtle.Turtle()
t.color("darkgreen", "lightgreen")
t.begin_fill()
for i in range(4):
    t.forward(100)
    t.left(90)
t.end_fill()

import turtle

t = turtle.Turtle()
t.speed(0)

def left():
    t.left(15)

def right():
    t.right(15)

def ahead():
    t.forward(10)

turtle.listen()
turtle.onkey(left, "Left")
turtle.onkey(right, "Right")
turtle.onkey(ahead, "Up")
turtle.done()

world("""
#########
#@ .  . #
#########
""")

while not treeFront():
    if onBerry():
        removeBerry()
    move()

world("""
#######
#@ $ .#
#######
""")

while not mushroomFront():
    move()
move()
move()
print("Done: the mushroom is on the berry.")

import pgzrun

WIDTH = 480
HEIGHT = 320

duck = Actor("ente", (240, 160))

def draw():
    screen.fill("lightblue")
    duck.draw()

def update():
    if keyboard.left:
        duck.x = duck.x - 4
    if keyboard.right:
        duck.x = duck.x + 4

pgzrun.go()

import pgzrun
import random

WIDTH = 480
HEIGHT = 320
points = 0
coin = Actor("pf_coin_1", (240, 160))

def draw():
    screen.fill("darkgreen")
    coin.draw()
    screen.draw.text("Points: " + str(points), (10, 10), fontsize=32)

def on_mouse_down(pos):
    global points
    if coin.collidepoint(pos):
        points = points + 1
        sounds.coin.play()
        coin.pos = (random.randint(30, 450), random.randint(30, 290))

pgzrun.go()

import pgzrun

WIDTH = 480
HEIGHT = 320
RUN = ["heroine_run_" + str(i) for i in range(1, 9)]
heroine = Actor(RUN[0], (240, 200))
time = 0

def draw():
    screen.blit("pf_bg_day", (0, 0))
    heroine.draw()

def update():
    global time
    time = time + 1
    heroine.image = RUN[time // 4 % 8]

pgzrun.go()

from guizero import App, Text, TextBox, PushButton

app = App(title="Greeting", width=300, height=180)
name = TextBox(app)
answer = Text(app, text="")

def greet():
    answer.value = "Hello " + name.value + "!"

PushButton(app, text="Greet", command=greet)
app.display()

from guizero import App, Text

app = App(title="Clock", width=240, height=140)
display = Text(app, text="0", size=40)

def tick():
    display.value = int(display.value) + 1

app.repeat(1000, tick)
app.display()

import numpy as np

scores = np.array([72, 85, 90, 64, 78, 88, 95])
print("Average:", scores.mean())
print("Best score:", scores.max())
print("Above 80:", scores[scores > 80])

import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(-3, 3, 50)
plt.plot(x, x ** 2, label="x²")
plt.plot(x, 2 * x + 1, "r--", label="2x + 1")
plt.title("Two functions")
plt.legend()
plt.grid(True)
plt.show()

import matplotlib.pyplot as plt

subjects = ["Math", "Sports", "Art", "CS"]
votes = [5, 9, 4, 8]
plt.bar(subjects, votes, color="seagreen")
plt.title("Favorite subject of class 7b")
plt.ylabel("Votes")
plt.show()

import requests

r = requests.get("https://api.open-meteo.com/v1/forecast",
                 params={"latitude": 51.51, "longitude": -0.13, "current": "temperature_2m"})
data = r.json()
print("Now in London:", data["current"]["temperature_2m"], "°C")

with open("notes.txt", "w") as f:
    f.write("Monday: learned Python\n")
    f.write("Tuesday: built a game\n")

with open("notes.txt") as f:
    for line in f:
        print(line.strip())

def double(n):
    result = n * 2
    return result

total = 0
for i in range(1, 4):
    total = total + double(i)
print("Sum:", total)