在matplotlib中添加整数图例而不是渐变图例

import matplotlib.pyplot as plt

x = [1, 2, 3, 4, 5]
y = [10, 20, 30, 40, 50]

plt.plot(x, y, label='数据')

# 创建整数图例的标签
labels = [str(i) for i in range(1, len(x)+1)]

# 创建整数图例对象
legend = plt.legend(labels, title='整数图例', loc='upper right')

# 设置整数图例的标题和位置
legend.get_title().set_fontsize('12')

plt.show()

import matplotlib.pyplot as plt

x = [1, 2, 3, 4, 5]
y = [10, 20, 30, 40, 50]

plt.plot(x, y, label='数据')

labels = [str(i) for i in range(1, len(x)+1)]
legend = plt.legend(labels, title='整数图例', loc='upper right')
legend.get_title().set_fontsize('12')

plt.show()