How to write a Pandas Dataframe into a HDF5 dataset

Question

I\'m trying to write data from a Pandas dataframe into a nested hdf5 file, with multiple groups and datasets within each group. I\'d like to keep it as a single file which w

Answer 1

df.to_hdf() expects a string as a key parameter (second parameter):

key : string

identifier for the group in the store

so try this:

df.to_hdf('database.h5', ds.name, table=True, mode='a')

where ds.name should return you a string (key name):

In [26]: ds.name
Out[26]: '/A1'