图例不显示边框
import matplotlib.pyplot as plt
import numpy as np
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
x = np.linspace(0.05, 10, 1000)
fig, ax = plt.subplots()
ax.plot(x, np.sin(x), label='sin')
ax.plot(x, np.cos(x), '--', label='cos')
ax.legend(loc='best', frameon=False)
# 图例不显示边框
plt.xlabel("x轴")
plt.ylabel("y轴")
plt.title("图例不显示边框")
plt.show() #显示图形
#（2021.11.30）
