find index of pandas column

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Elias
08 Mar 2016
1# PANDAS: get column number from colomn name
2dataframe.columns.get_loc("<col_name>")
3
source
Sophie
27 Feb 2016
1In [45]: df = DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
2
3In [46]: df.columns
4Out[46]: Index([apple, orange, pear], dtype=object)
5
6In [47]: df.columns.get_loc("pear")
7Out[47]: 2
8
source
Maia
03 Jun 2018
1In [48]: a
2Out[48]: 
3   c1  c2
40   0   1
51   2   3
62   4   5
73   6   7
84   8   9
9
10In [49]: a.c1[a.c1 == 8].index.tolist()
11Out[49]: [4]
source
Lylia
07 Aug 2018
1print(df[df['Name']=='Donna'].index.values)
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