from turtle import Turtle
from numpy import cos, sin, pi

t = Turtle()
t.speed(2)

t.shape('turtle')

def pol2dec(r: float, phi: float) -> tuple:
    x = r * cos(phi)
    y = r * sin(phi)
    point = (x, y)
    print("point= ", point)
    return point


vMin = 1
vMax = 200

radius, radius_inc = 0, 0.5
angle, angle_inc = 0, 2 * pi / 20
for vc in range(vMin, vMax + 1):
    radius += radius_inc
    angle += angle_inc
    t.goto(*pol2dec(radius, angle))