func Point() (x, y float64) { for { // This loop runs 4/π times on average. x = 2*rand.Float64() - 1 y = 2*rand.Float64() - 1 if x*x+y*y < 1 { return } } }

def Point():
    i = 0
    while i < math.pi * 4:
        x = 2 * random.uniform(0,1) - 1
        y = 2 * random.uniform(0,1) - 1
        if x*x + y*y < 1:
            return x, y
        i += 1
        
Point()