站長資訊網python畫圓運用了matplotlb庫的figure()和Circle()函數；其中，figure()函數用于確定畫布大小，而Circle()函數用于配置圓的相關信息，進而畫圓。
本教程操作環境：windows7系統、Python3版、Dell G3電腦。
python畫圓代碼
from matplotlib.patches import Ellipse, Circle import matplotlib.pyplot as plt def plot_cicle(): fig = plt.figure() ax = fig.add_subplot(111) cir1 = Circle(xy = (0.0, 0.0), radius=2, alpha=0.5) ax.add_patch(cir1) x, y = 0, 0 ax.plot(x, y, 'ro') plt.axis('scaled') plt.axis('equal') #changes limits of x or y axis so that equal increments of x and y have the same length plt.show() plot_cicle()
