human
Complete this python program:
def _find_all_structured_arrays(handle):
assistant
#Here is the Python code you requested.

    """Find all structured arrays in an HDF5 file
    """
    import h5py
    structured_arrays = []
    def append_structured_arrays(name, obj):
        if (isinstance(obj, h5py.Dataset) and (obj.dtype.kind == u'V')):
            structured_arrays.append(name)
    handle.visititems(append_structured_arrays)
    return structured_arrays