[英]python: pandas: add values from other dataframe into new column by condition
[英]new Pandas Dataframe column calculated from other column values
如何在由該行中索引值范圍的MEAN組成的數據框中創建新列?
例:
1 2 3 JUNK
0 0.0 0.0 0.0 A
1 1.0 1.0 -1.0 B
2 2.0 2.0 1.0 C
嘗試確定MEAN列時將忽略JUNK
列
預期輸出:
1 2 3 JUNK MEAN
0 0.0 0.0 0.0 A 0.0
1 1.0 1.0 -1.0 B 0.33
2 2.0 2.0 1.0 C 1.66
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