csv里有学校名称，专业名称，最高分、最低分分布情况，用matplotlib箱线图图展示的python代码

好的，我知道了。以下是您需要的Python代码，使用pandas和matplotlib库：

import pandas as pd
import matplotlib.pyplot as plt

# 读取CSV文件
data = pd.read_csv('your_data_file.csv')

# 提取数据列
schools = data['school_name']
majors = data['major_name']
high_scores = data['highest_score']
low_scores = data['lowest_score']

# 绘制箱线图
fig, ax = plt.subplots()
ax.boxplot([high_scores, low_scores], 
           labels=['Highest Score', 'Lowest Score'], 
           showfliers=False)
ax.set_title('Distribution of Scores by School and Major')
ax.set_xlabel('School and Major')
ax.set_ylabel('Score')
plt.xticks(range(1, len(majors)+1), [f'{major}\n{school}' for major, school in zip(majors, schools)], rotation=90)
plt.show()

请注意，这只是一个示例代码，您需要将其适应您的具体数据。此代码将生成一个箱线图，显示每个学校和专业的最高分和最低分分布情况。