我需要使用dict过滤数据框,使用键作为列名构造,值是我想要过滤的值:
filter_v = {'A':1, 'B':0, 'C':'This is right'}
# this would be the normal approach
df[(df['A'] == 1) & (df['B'] ==0)& (df['C'] == 'This is right')]
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但是我想做点什么
for column, value in filter_v.items():
df[df[column] == value]
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但这会多次过滤数据框,一次过滤一个值,而不会同时应用所有过滤器.有没有办法以编程方式进行?
编辑:一个例子:
df1 = pd.DataFrame({'A':[1,0,1,1, np.nan], 'B':[1,1,1,0,1], 'C':['right','right','wrong','right', 'right'],'D':[1,2,2,3,4]})
filter_v = {'A':1, 'B':0, 'C':'right'}
df1.loc[df1[filter_v.keys()].isin(filter_v.values()).all(axis=1), :]
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给
A B C D
0 1 1 right 1
1 0 1 right 2
3 1 0 right 3
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但预期的结果是
A B C D
3 1 0 right …Run Code Online (Sandbox Code Playgroud)