import pandas as pd
from matplotlib import pyplot as plt

# 设置图形大小
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True

# 创建列的列表
columns = ['mpg', 'displ', 'hp', 'weight']

# 读取CSV文件
df = pd.read_csv("auto-mpg.csv", usecols=columns)

# 绘制线条
df.plot()

plt.show()