python matplotlib 绘制柱状图

"""
    绘制柱状图
"""
import numpy as np
import matplotlib.pyplot as mp

mp.rcParams['font.sans-serif'] = ['SimHei']  # 用来正常显示中文标签
mp.rcParams['axes.unicode_minus'] = False    # 用来正常显示负号

# 1.准备数据
apples = np.random.randint(10, 100, 12)
oranges = np.random.randint(10, 100, 12)

# 2.创建窗口
mp.figure("Bar", facecolor="lightgray", figsize=(10, 6))
mp.title("Bar", fontsize=18)
mp.xlabel('月份', fontsize=14)
mp.ylabel('价格', fontsize=14)
mp.tick_params(labelsize=10)

# 3.绘制图片
x = np.arange(len(apples))
mp.bar(x - 0.2, apples, 0.4, align="center", label="Apples")
mp.bar(x + 0.2, oranges, 0.4, align="center", label="Oranges")
mp.grid(axis="y", linestyle=":")

# 4.设置X轴刻度
mp.xticks(x, ["1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"])

mp.legend()
mp.show()