如何在列之间进行划分并将结果存储在新的数据帧中

import pandas as pd

data = {'score': [55, 66, 77, 88, 99]}
df = pd.DataFrame(data)

   score
0     55
1     66
2     77
3     88
4     99

# 自定义区间和标签
bins = [0, 60, 80, 100]
labels = ['Low', 'Medium', 'High']

# 添加一个新列 "grade" 到数据帧中
df['grade'] = pd.cut(df['score'], bins=bins, labels=labels, right=False)

   score grade
0     55   Low
1     66   Low
2     77  Medium
3     88  High
4     99  High

# 添加一个新列 "grade_q" 到数据帧中
df['grade_q'] = pd.qcut(df['score'], q=3, labels=['Low', 'Medium', 'High'])

   score grade grade_q
0     55   Low      Low
1     66   Low      Low
2     77  Medium  Medium
3     88  High     High
4     99  High     High