Module H5O

Module for HDF5 “H5O” functions.

Functional API

h5py.h5o.open(ObjectID loc, STRING name, PropID lapl=None) → ObjectID

Open a group, dataset, or named datatype attached to an existing group.

Create a new hard link to an object. Useful for objects created with h5g.create_anon() or h5d.create_anon().

h5py.h5o.copy(ObjectID src_loc, STRING src_name, GroupID dst_loc, STRING dst_name, PropID copypl=None, PropID lcpl=None)

Copy a group, dataset or named datatype from one location to another. The source and destination need not be in the same file.

The default behavior is a recursive copy of the object and all objects below it. This behavior is modified via the “copypl” property list.

h5py.h5o.set_comment(ObjectID loc, STRING comment, **kwds)

Set the comment for any-file resident object. Keywords:

STRING obj_name (“.”)

Set comment on this group member instead

PropID lapl (None)

Link access property list

h5py.h5o.get_comment(ObjectID loc, STRING comment, **kwds)

Get the comment for any-file resident object. Keywords:

STRING obj_name (“.”)

Set comment on this group member instead

PropID lapl (None)

Link access property list

h5py.h5o.visit(ObjectID loc, CALLABLE func, **kwds) → <Return value from func>

Iterate a function or callable object over all objects below the specified one. Your callable should conform to the signature:

func(STRING name) => Result

or if the keyword argument “info” is True:

func(STRING name, ObjInfo info) => Result

Returning None continues iteration; returning anything else aborts iteration and returns that value. Keywords:

BOOL info (False)

Callback is func(STRING, Objinfo)

STRING obj_name (“.”)

Visit a subgroup of “loc” instead

PropLAID lapl (None)

Control how “obj_name” is interpreted

INT idx_type (h5.INDEX_NAME)

What indexing strategy to use

INT order (h5.ITER_INC)

Order in which iteration occurs

Compatibility note: No callback is executed for the starting path (“.”), as some versions of HDF5 don’t correctly handle a return value for this case. This differs from the behavior of the native H5Ovisit, which provides a literal “.” as the first value.

h5py.h5o.get_info(ObjectID loc, STRING name=, INT index=, **kwds) → ObjInfo

Get information describing an object in an HDF5 file. Provide the object itself, or the containing group and exactly one of “name” or “index”.

STRING obj_name (“.”)

When “index” is specified, look in this subgroup instead. Otherwise ignored.

PropID lapl (None)

Link access property list

INT index_type (h5.INDEX_NAME)

INT order (h5.ITER_INC)

Info classes

class h5py.h5o.ObjInfo

Represents the H5O_info_t structure

Module constants

Object types

h5py.h5o.TYPE_GROUP
h5py.h5o.TYPE_DATASET
h5py.h5o.TYPE_NAMED_DATATYPE

Copy flags

h5py.h5o.COPY_SHALLOW_HIERARCHY_FLAG

Copy only immediate members of a group.

Expand soft links into new objects.

Expand external link into new objects.

h5py.h5o.COPY_EXPAND_REFERENCE_FLAG

Copy objects that are pointed to by references.

h5py.h5o.COPY_WITHOUT_ATTR_FLAG

Copy object without copying attributes.