Grouping On Identical Column Names In Pandas
time A1 A1 A2 A2 A2 A3 A3 2017-01 a1 a2 b1 b2 c ..... 2017-02 a3 a4 b3 b4 c 2017-03 a5 a6 b5 b6 c ...
Solution 1:
Use groupby
with level=0
and axis=1
.
df.groupby(level=0, axis=1).mean()
np.random.seed(0)
df = pd.DataFrame(np.random.choice(10, (3, 5)), columns=list('AAABB'))
df
A A A B B
0 5 0 3 3 7
1 9 3 5 2 4
2 7 6 8 8 1
df.groupby(level=0, axis=1).mean()
A B
0 2.666667 5.0
1 5.666667 3.0
2 7.000000 4.5
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