pandas.Series.to_hdf

Series.to_hdf(path_or_buf, key, **kwargs) [source]

Write the contained data to an HDF5 file using HDFStore.

Parameters:

path_or_buf : the path (string) or HDFStore object key : string identifier for the group in the store mode : optional, {‘a’, ‘w’, ‘r+’}, default ‘a’ 'w' Write; a new file is created (an existing file with the same name would be deleted). 'a' Append; an existing file is opened for reading and writing, and if the file does not exist it is created. 'r+' It is similar to 'a', but the file must already exist. format : ‘fixed(f)|table(t)’, default is ‘fixed’ fixed(f) : Fixed format Fast writing/reading. Not-appendable, nor searchable table(t) : Table format Write as a PyTables Table structure which may perform worse but allow more flexible operations like searching / selecting subsets of the data append : boolean, default False For Table formats, append the input data to the existing data_columns : list of columns, or True, default None List of columns to create as indexed data columns for on-disk queries, or True to use all columns. By default only the axes of the object are indexed. See here. Applicable only to format=’table’. complevel : int, 0-9, default None Specifies a compression level for data. A value of 0 disables compression. complib : {‘zlib’, ‘lzo’, ‘bzip2’, ‘blosc’}, default ‘zlib’ Specifies the compression library to be used. As of v0.20.2 these additional compressors for Blosc are supported (default if no compressor specified: ‘blosc:blosclz’): {‘blosc:blosclz’, ‘blosc:lz4’, ‘blosc:lz4hc’, ‘blosc:snappy’, ‘blosc:zlib’, ‘blosc:zstd’}. Specifying a compression library which is not available issues a ValueError. fletcher32 : bool, default False If applying compression use the fletcher32 checksum dropna : boolean, default False. If true, ALL nan rows will not be written to store.