human
Solve the following python programming problem given the following code:
def expandDefinition(view, structuralNode, breakdownNode, definitionNode, depth, axisDisposition, facts, i = None, tblAxisRels = None, processOpenDefinitionNode = True) : 
    subtreeRelationships = view.axisSubtreeRelSet.fromModelObject (definitionNode) 
    def checkLabelWidth(structuralNode, checkBoundFact = False) : 
        if (axisDisposition == 'y') : 
            label = structuralNode.header (lang = view.lang, returnGenLabel = (not checkBoundFact), returnMsgFormatString = (not checkBoundFact)) 
            if label : 
                widestWordLen = max (((len (w) * RENDER_UNITS_PER_CHAR) for w in label.split ())) 
                while (structuralNode.depth >= len (view.rowHdrColWidth)) : 
                    view.rowHdrColWidth.append (0) 
if (definitionNode.isAbstract or (not subtreeRelationships)) : 
                    if (widestWordLen > view.rowHdrColWidth [structuralNode.depth]) : 
                        view.rowHdrColWidth [structuralNode.depth] = widestWordLen 
else : 
                    if (widestWordLen > view.rowNonAbstractHdrSpanMin [structuralNode.depth]) : 
                        view.rowNonAbstractHdrSpanMin [structuralNode.depth] = widestWordLen 
if ((axisDisposition == 'z') and (structuralNode.aspects is None)) : 
        structuralNode.aspects = view.zOrdinateChoices.get (definitionNode, None) 
if (structuralNode and isinstance (definitionNode, (ModelBreakdown, ModelEuAxisCoord, ModelDefinitionNode))) : 
        try : 
            (ordCardinality, ordDepth) = definitionNode.cardinalityAndDepth (structuralNode) 
            if ((not definitionNode.isAbstract) and isinstance (definitionNode, ModelClosedDefinitionNode) and (ordCardinality == 0)) : 
                view.modelXbrl.error ('xbrlte:closedDefinitionNodeZeroCardinality', _ ('Closed definition node %(xlinkLabel)s does not contribute at least one structural node'), modelObject = (view.modelTable, definitionNode), xlinkLabel = definitionNode.xlinkLabel, axis = definitionNode.localName) 
nestedDepth = (depth + ordDepth) 
  ...

    
    

    Fix the buggy line: if ((axisSubtreeRel is None) or (not dim.isExplicitDimension)) :
assistant
#Here is Python program to fix the buggy line: if ((axisSubtreeRel is None) or (not dim.

if ((dim is None) or (not dim.isExplicitDimension)) :