Cannabis in Python

import matplotlib.pyplot as plt
from math import sin,cos

func = lambda phi:(1+sin(phi))*(1+0.9*cos(8*phi))*(1+0.1*cos(24*phi))

class Cannabis(object):
    def __init__(self,func):
        "Инициализация конопли. Ее функция уже определена"
        self.coord = []
        self.x = []
        self.y = []
        phi = 0
        while phi<360:
            r = func(phi)
            crt = (phi,r)
            self.coord.append(crt)
            phi+=0.01
        for n,m in self.coord:
            xx = m * cos(n)
            yy = m * sin(n)
            self.x.append(xx)
            self.y.append(yy)
    def graph(self):
        plt.plot(self.x,self.y,'g--')
        plt.show()

o = Cannabis(func)
o.graph()