pandas.HDFStore.get_storer#

HDFStore.get_storer(key)[source]#

Return the storer object for a key.

The storer is the low-level wrapper around the stored pandas object. It exposes implementation details such as nrows (the row count on disk) and table (the underlying PyTables Table), which can be useful for inspecting a store without loading its data.

Parameters:

keystr: Object stored in the file.

Returns:

GenericFixed or Table: The storer wrapping the stored object. Table instances expose attributes such as nrows and table.

Raises:

KeyError: If key is not in the file.

See also

HDFStore.get: Read the stored object back into pandas.
HDFStore.info: Print a summary of the store’s contents.

Examples

>>> df = pd.DataFrame([[1, 2], [3, 4]], columns=["A", "B"])
>>> store = pd.HDFStore("store.h5", "w")
>>> store.append("data", df, format="table")
>>> store.get_storer("data").nrows
>>> store.close()