将python中的条形图与月份、年份和记录组合在一起

import matplotlib.pyplot as plt
import numpy as np

# 定义月份、年份和记录数据
months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun']
years = [2019, 2020, 2021]
records = np.random.randint(100, 1000, size=(len(years), len(months)))

# 设置条形图的宽度和间距
bar_width = 0.2
spacing = 0.1

# 计算每个条形图的位置
x = np.arange(len(months))
x_ticks = [x + i * (bar_width + spacing) for i in range(len(years))]

# 绘制条形图
fig, ax = plt.subplots()
for i, year in enumerate(years):
    ax.bar(x_ticks[i], records[i], width=bar_width, label=str(year))

# 设置x轴标签和刻度
ax.set_xticks(x + (len(years) - 1) * (bar_width + spacing) / 2)
ax.set_xticklabels(months)

# 添加图例
ax.legend()

# 显示图形
plt.show()