matplotlib——坐标负数显示问题Unicode minus

坐标轴的负号正常显示

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

# Fixing random state for reproducibility
np.random.seed(19680801)

# Unicode minus
matplotlib.rcParams['axes.unicode_minus'] = False

fig, ax = plt.subplots()
ax.plot(10*np.random.randn(100), 10*np.random.randn(100), 'o')
ax.set_title('Using hyphen instead of Unicode minus')
plt.show()