根据分类列中的dinstit值的计数从pandas数据帧中删除所有行

import pandas as pd

data = {'分类': ['A', 'B', 'A', 'C', 'B', 'A'],
        'dinstit': [1, 2, 1, 3, 2, 1],
        '数值': [10, 20, 30, 40, 50, 60]}
df = pd.DataFrame(data)

count = df['dinstit'].value_counts()

df = df[~df['dinstit'].isin(count[count > 1].index)]

import pandas as pd

data = {'分类': ['A', 'B', 'A', 'C', 'B', 'A'],
        'dinstit': [1, 2, 1, 3, 2, 1],
        '数值': [10, 20, 30, 40, 50, 60]}
df = pd.DataFrame(data)

count = df['dinstit'].value_counts()
df = df[~df['dinstit'].isin(count[count > 1].index)]