[英]pandas filter group by
我想過濾此查詢中的結果,因此如果可能在一行代碼中,表中只有結果 >1。
import pandas as pd
import numpy as np
df= pd.DataFrame({'Product':['A','B', 'C','A','B','D'],
'Age':[28,39,21,50,35,43],
'Country':['USA','India','Germany','USA','India','India']
})
print(df.head())
table=df.groupby(['Product','Country'])['Age'].count()
table
import pandas as pd
import numpy as np
df= pd.DataFrame({'Product':['A','B', 'C','A','B','D'],
'Age':[28,39,21,50,35,43],
'Country':['USA','India','Germany','USA','India','India']
})
table=df.groupby(['Product','Country'])['Age'].count().reset_index(name='count')
table1 = table[table["count"]>1]
table1
您可以像這樣過濾計數列 fe。 您還可以將其更改為單行,例如:
table=df.groupby(['Product','Country'])['Age'].count().reset_index(name='count')[table["count"]>1]
讓我們鏈式query
方法:
table = (df.groupby(['Product','Country'])['Age'].count()
.reset_index(name='Count')
.query('Count > 1'))
table
Output:
Product Country Count
0 A USA 2
1 B India 2
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