Python code here.
r = None
def setup():
global r
createCanvas(900, 900)
r = random(100, 700)
noFill()
def draw():
x, y = 100, 100
rect(x, y, r, r)
def keyPressed():
console.log("Key pressed event")
if key == "n":
global r
r = random(100, 700)
redraw()
def mouseDragged():
global r
r = random(100, 700)
redraw()