/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
	}
}

LyogcGFja2FnZSB3aGF0ZXZlcjsgLy8gZG9uJ3QgcGxhY2UgcGFja2FnZSBuYW1lISAqLwoKaW1wb3J0IGphdmEudXRpbC4qOwppbXBvcnQgamF2YS5sYW5nLio7CmltcG9ydCBqYXZhLmlvLio7CgovKiBOYW1lIG9mIHRoZSBjbGFzcyBoYXMgdG8gYmUgIk1haW4iIG9ubHkgaWYgdGhlIGNsYXNzIGlzIHB1YmxpYy4gKi8KY2xhc3MgSWRlb25lCnsKCXB1YmxpYyBzdGF0aWMgdm9pZCBtYWluIChTdHJpbmdbXSBhcmdzKSB0aHJvd3MgamF2YS5sYW5nLkV4Y2VwdGlvbgoJewoJCS8vIHlvdXIgY29kZSBnb2VzIGhlcmUKCX0KfQ==

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

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

# 図の設定
fig, ax = plt.subplots()
ax.set_xlim(-2, 2)
ax.set_ylim(-2, 2)
ax.set_aspect('equal')  # 円く見せるために
line, = ax.plot([], [], 'o-', lw=2, color='blue')  # 青い線で円描く

def init():
    line.set_data([], [])
    return line,

def animate(i):
    theta = np.linspace(0, 2*np.pi, 100)  # 円の点100個
    x = np.cos(theta + i/10)  # iで回転させる
    y = np.sin(theta + i/10)
    line.set_data(x, y)
    return line,

# アニメーション作成（360フレームで一周、50ms間隔）
ani = animation.FuncAnimation(fig, animate, init_func=init, frames=360, interval=50, blit=True)
plt.show()  # これで表示！