Python【Pandas】取交集、并集、差集

前堤条件：对于colums都相同的dataframe做过滤的时候

创建2个结构（列名）一致的DataFrame,df1和df2有1条重合的数据

import pandas as pd

df1=pd.DataFrame([['a',10,'男'],['b',11,'女']],columns=['name','age','gender'])
df2=pd.DataFrame([['a',10,'男']],columns=['name','age','gender'])
df1

df2

取交集

pd.merge(df1,df2,on=['name','age','gender'])

取并集

pd.merge(df1,df2,on=['name','age','gender'],how='outer')

取差集

df1=df1.append(df2)
df1=df1.drop_duplicates(subset=['name','age','gender'],keep=False)
df1

python pandas取交集、并集、差集