python - How to store the name of rows and column index in pandas DataFrame? -


i have dataframe named rows , columns indexes:

import numpy np import pandas pd  = pd.index(["a", "b", "c", "d"], name="rows") c = pd.index(["col0", "col1", "col2"], name="cols") df = pd.dataframe(data=np.random.rand(4, 3),                   index=i,                   columns=c)

i have tried store in several formats (excel, csv) when re-reading file, names lost (maybe have missed options). msgpack works marked experimental prefer avoid now. prefer avoid pickle. there way (format , option) store name of 2 indexes?

edit: know how write , read csv pandas. problem save name of column index , of row index.

you can use hdf.

import numpy np import pandas pd = pd.index(["a", "b", "c", "d"], name="rows") c = pd.index(["col0", "col1", "col2"], name="columns") df = pd.dataframe(data=np.random.rand(4,3), index=i, columns=c) print(df)  columns      col0      col1      col2 rows                                         0.098497  0.918954  0.642800 b        0.168266  0.678434  0.455059 c        0.434939  0.244027  0.599400 d        0.877356  0.053085  0.182661  df.to_hdf('test.hdf', 'test') print(pd.read_hdf('test.hdf'))  columns      col0      col1      col2 rows                                         0.098497  0.918954  0.642800 b        0.168266  0.678434  0.455059 c        0.434939  0.244027  0.599400 d        0.877356  0.053085  0.182661

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