将列条目转换为行pandas

pandas.melt(frame, id_vars=None, value_vars=None, var_name=None, value_name='value', col_level=None)

import pandas as pd

# 创建示例数据框
data = {'Name': ['Alice', 'Bob', 'Charlie'],
        'Math': [90, 80, 70],
        'Science': [95, 85, 75],
        'English': [92, 82, 72]}
df = pd.DataFrame(data)

# 将列条目转换为行
df_melted = pd.melt(df, id_vars='Name', value_vars=['Math', 'Science', 'English'], var_name='Subject', value_name='Score')

print(df_melted)

      Name  Subject  Score
0    Alice     Math     90
1      Bob     Math     80
2  Charlie     Math     70
3    Alice  Science     95
4      Bob  Science     85
5  Charlie  Science     75
6    Alice  English     92
7      Bob  English     82
8  Charlie  English     72