1df.loc[:, df.columns != 'b']
2
3 a c d
40 0.561196 0.013768 0.772827
51 0.882641 0.615396 0.075381
62 0.368824 0.651378 0.397203
73 0.788730 0.568099 0.869127
1>>> df
2
3 a b c d
40 0.175127 0.191051 0.382122 0.869242
51 0.414376 0.300502 0.554819 0.497524
62 0.142878 0.406830 0.314240 0.093132
73 0.337368 0.851783 0.933441 0.949598
8
9>>> df.drop('b', axis=1)
10
11 a c d
120 0.175127 0.382122 0.869242
131 0.414376 0.554819 0.497524
142 0.142878 0.314240 0.093132
153 0.337368 0.933441 0.949598