human
Solve the following python programming problem given the following code:
@ _func_wrapper 
def save(self, obj, where = '/', cascade = True, lazy = False) : 
    ' Saves changes of a given object to the file. Saves object as new at
        location "where" if it is not in the file yet. Returns saved node.

        cascade: True/False process downstream relationships
        lazy: True/False process any quantity/ndarray attributes ' 
    def assign_attribute(obj_attr, attr_name, path, node) : 
        ' subfunction to serialize a given attribute ' 
        if (isinstance (obj_attr, pq.Quantity) or isinstance (obj_attr, np.ndarray)) : 
            if (not lazy) : 
                if isinstance (obj_attr, pq.Quantity) : 
                    for un in obj_attr.dimensionality.keys () : 
                        if ((not (un.name in pq.units.__dict__)) or (not isinstance (pq.units.__dict__ [un.name], pq.Quantity))) : 
                            obj_attr = obj_attr.simplified 
                            break 
if (obj_attr.size == 0) : 
                    np_type = (obj_attr.dtype if (self.array_dtype is None) else self.array_dtype) 
                    atom = tb.Atom.from_dtype (np.dtype ((np_type, (1,)))) 
                    new_arr = self._data.createEArray (path, (attr_name + '__temp'), atom, shape = (0,), expectedrows = 1) 
else : 
                    new_arr = self._data.createArray (path, (attr_name + '__temp'), obj_attr) 
if hasattr (obj_attr, 'dimensionality') : 
                    for un in obj_attr.dimensionality.items () : 
                        new_arr._f_setAttr (('unit__' + un [0].name), un [1]) 
try : 
                    self._data.removeNode (path, attr_name) 
except : 
                    pass 
self._data.renameNode (path, attr_name, name = (attr_name + '__temp')) 
else : 
            if (obj_attr is not None) : 
                node._f_setAttr (attr_name, obj_attr) 
obj_type = obj.__class__.__name__ 
    if ((self._data.mode != 'w') and hasattr (obj, 'hdf5_path')) : 
        path = str (obj.hdf5_path) 
        try : 
            node = self._data.getNode...

    
    

    Fix the buggy line: if (not child.hdf5_path.startswith (child._v_pathname)) :
assistant
#Here is Python program to fix the buggy line: if (not child.

if (not child.hdf5_path.startswith (ch._v_pathname)) :