import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation

fig, ax = plt.subplots()
xdata, ydata = [], []
ln, = plt.plot([], [], lw=3)
a = 0
b = 0


def init():
    ax.set_xlim(0, 50*np.pi)
    ax.set_ylim(-20, 20)
    return ln,


def update(frame):
    xdata.append(a*frame-b*np.sin(frame))
    ydata.append(a-b*np.cos(frame))
    ln.set_data(xdata, ydata)
    return ln,


a = int(input("daj a"))
b = int(input("Podaj b "))

ani = FuncAnimation(fig, update, frames=np.linspace(
    0, 20*np.pi, 1000),
    init_func=init, interval=5, blit=True, repeat=False)
plt.show()