下面小编就为大家分享一篇pandas实现选取特定索引的行,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧
如下所示:
>>> import numpy as np >>> import pandas as pd >>> index=np.array([2,4,6,8,10]) >>> data=np.array([3,5,7,9,11]) >>> data=pd.DataFrame({'num':data},i<i style="color:transparent">来源gaodai$ma#com搞$代*码网</i>ndex=index) >>> print(data) num 2 3 4 5 6 7 8 9 10 11 >>> select_index=index[index>5] >>> print(select_index) [ 6 8 10] >>> data['num'].loc[select_index] 6 7 8 9 10 11 Name: num, dtype: int32 >>>
注意,不能用iloc,iloc是将序列当作数组来访问,下标又会从0开始:
>>> data['num'].iloc[2:5] 6 7 8 9 10 11 Name: num, dtype: int32 >>> data['num'].iloc[[2,3,4]] 6 7 8 9 10 11 Name: num, dtype: int32 >>>
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