pandas.HDFStore.walk#

HDFStore.walk(where='/')[source]#

Walk the pytables group hierarchy for pandas objects.

This generator will yield the group path, subgroups and pandas objectnames for each group.

Any non-pandas PyTables objects that are not a group will be ignored.

Thewhere group itself is listed first (preorder), then each of itschild groups (following an alphanumerical order) is also traversed,following the same procedure.

Parameters:

wherestr, default “/”

Group where to start walking.

Yields:

pathstr

Full path to a group (without trailing ‘/’).

groupslist

Names (strings) of the groups contained inpath.

leaveslist

Names (strings) of the pandas objects contained inpath.

Examples

>>>df1=pd.DataFrame([[1,2],[3,4]],columns=['A','B'])>>>store=pd.HDFStore("store.h5",'w')>>>store.put('data',df1,format='table')>>>df2=pd.DataFrame([[5,6],[7,8]],columns=['A','B'])>>>store.append('data',df2)>>>store.close()>>>forgroupinstore.walk():...print(group)>>>store.close()