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print('Hello world')

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from browser import document
import turtle

t = turtle.Turtle()

t.width(5)

for c in ['red', '#00ff00', '#fa0', 'rgb(0,0,200)']:
    t.color(c)
    t.forward(100)
    t.left(90)

# dot() and write() do not require the pen to be down
t.penup()
t.goto(-30, -100)
t.dot(40, 'rgba(255, 0, 0, 0.5')
t.goto(30, -100)
t.dot(40, 'rgba(0, 255, 0, 0.5')
t.goto(0, -70)
t.dot(40, 'rgba(0, 0, 255, 0.5')

t.goto(0, 125)
t.color('purple')
t.write("I love Brython!", font=("Arial", 20, "normal"))


turtle.done()

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from browser import document
from visualife.core.Plot import Plot
from visualife.core.HtmlViewport import HtmlViewport
from visualife.calc.math_utils import linspace
from math import pi, sin, cos

# ---------- The drawing area is 900 x 700 pixels, 
# 'svg' is the ID string of enclosing page element
drawing = HtmlViewport(document['turtle-div'],  900, 700)
# ---------- The plot is 800 x 600 pixels
pl = Plot(drawing, 100, 800, 100, 600, 0.0, 
2 * pi, -1.0, 1.0, axes_definition="LBRU")
for l in ["B", "U", "L", "R"]:
    pl.axes[l].fill = "black"
    pl.axes[l].stroke_width = 3.0
pl.draw_axes()
pl.draw_grid()
pl.draw_plot_label()

x = linspace(0, 2*pi, num=100)
ys = [sin(ix) for ix in x]
yc = [cos(ix) for ix in x]
pl.line(x, ys, adjust_range=False)
pl.line(x, yc, adjust_range=False)
pl.draw(grid=True)

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