title: How to push widgets to top left instead of bottom right
body: <p>Just started messing with pyqt5 and was wondering how to push the widgets to top for QVBoxLayout and left for QHBoxLayout.  Currently with addStretch() it pushes the widgets to bottom/right.  I'd like to avoid using absolute positioning.</p>
  
  <pre><code>self.tabColor.layout = QVBoxLayout(self)
  self.tabColor.layout.addStretch()    
  
  ## FOR CONTROL
  lbl_control = QLabel(self)
  lbl_control.setText("control")
  le_control = QLineEdit(self)
  
  hbox_control = QHBoxLayout()
  hbox_control.addStretch(1)
  hbox_control.addWidget(lbl_control)
  hbox_control.addWidget(le_control)
  
  ## FOR UNKNOWN
  lbl_unknown = QLabel(self)
  lbl_unknown.setText("unknown")
  le_unknown = QLineEdit(self)
  
  hbox_unknown = QHBoxLayout()
  hbox_unknown.addStretch(1)
  hbox_unknown.addWidget(lbl_unknown)
  hbox_unknown.addWidget(le_unknown)
  
  
  self.tabColor.layout.addLayout(hbox_control)
  self.tabColor.layout.addLayout(hbox_unknown)
  self.tabColor.setLayout(self.tabColor.layout)
  </code></pre>
  
  <p>I used <code>self.tabColor.layout.setDirection(3)</code>.  It places the horizontal layout on top but it seems to flip the order.  Basically 'unknown' will be first then 'conrol'.  Its not a big deal but was wondering if there are other options i could try</p>