title: PyQt : Put several QTreeWidgetItem into columns of QTreeWidget
body: <p>I made a function which allows to add item to a tree (parent + child or children). </p>
  
  <pre><code>def addItemsToSummary(self, parent, text, checkable=False, expanded=True):
      self.tabItems = []
  
      self.tabParent.append(text)
  
      self.item = QTreeWidgetItem(parent, [text])
  
      lhs, rhs = self.item.text(0).split("=", 1)
      self.nominalValue,_ = rhs.split(")", 1)
      print(self.nominalValue)
      self.val = re.findall('\w+', self.nominalValue)
      print(self.val)
      print(self.val[0])
      print(self.val[1])
  
      if checkable:
          self.item.setCheckState(0, Qt.Unchecked)
      else:
          self.item.setFlags(self.item.flags() &amp; ~Qt.ItemIsUserCheckable)
      self.item.setExpanded(expanded)
  
      self.addChildToSummary(self.item, ["Nominal value = ", self.val[0], self.val[1]])
      self.addChildToSummary(self.item, ["Min =","",self.val[1]])
      self.addChildToSummary(self.item, ["Max =","",self.val[1]])
      self.addChildToSummary(self.item, ["Type = ", "float",''])
      self.addChildToSummary(self.item, ["Relation =","",""])
  
      if self.tabItems is not None:
          self.tabAnalysis.append(self.tabItems)
  
      return self.tabAnalysis, self.nominalValue
  </code></pre>
  
  <p>I made another function which allows to add each child to an item (parent).</p>
  
  <pre><code> def addChildToSummary(self, parent, tab):
      item1 = QTreeWidgetItem(parent, [tab[0]])
      item2 = QTreeWidgetItem(parent, [tab[1]])
      item3 = QTreeWidgetItem(parent, [tab[2]])
      item2.setFlags(item2.flags() | Qt.ItemIsEditable)
      self.tabChild.append((item1.text(0),item2.text(0),item3.text(0)))
      print(item2.text(0))
      self.tabItems.append([parent.text(0),(item1.text(0),item2.text(0),item3.text(0))])
  
      return item1, item2, self.tabItems
  </code></pre>
  
  <p>I would like to know if it is possible to put each <code>QTreeWidgetItem</code> into column of <code>QTreeWidget</code>.</p>