Python读取Excel数据并绘制折线图

import pandas as pd
import matplotlib.pyplot as plt
df = pd.read_excel("excel文件.xlsx")
print(df)
print(df["X"])

# 显示中文
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False

plt.plot(df["日期"], df["X"], label='X', linewidth=1, color='r', marker='o',
markerfacecolor='blue', markersize=6)
plt.plot(df["日期"], df["Y"], label='Y', linewidth=1, color='y', marker='o',
markerfacecolor='blue', markersize=6)
plt.plot(df["日期"], df["Z"], label='Z', linewidth=1, color='b', marker='o',
markerfacecolor='blue', markersize=6)

plt.xlabel("日期")
plt.xticks(df["日期"], rotation=30)  # 横坐标倾斜度
plt.ylabel('偏差值')
plt.title("偏差数据统计")
plt.legend()
plt.grid()
plt.show()