在我的UI布局中奇怪的间距

Question

每当我运行我的这个脚本时，我的元素的布局都在正确的区域，但是右边的列（标签/按钮/行编辑所在的位置）的间距使它们之间的间距非常难看。你知道吗

你知道我怎么把它干掉吗？或者使用gridLayout不是一个明智的选择？你知道吗

 class createUI(QFrame):
    def __init__(self, parent =None):
        QFrame.__init__(self, parent)
        self.initUI()

    def initUI(self):   
        self.objLbl = QLabel('Name of Item')
        self.objTxt = QLineEdit()
        self.objTxt.setMaximumWidth(100)
        self.renameLbl = QLabel('Rename')
        self.renameTxt = QLineEdit()
        self.renameTxt.setMaximumWidth(100)

        self.itemLbl = QLabel('Item Lists')
        self.itemList = QListWidget()

        self.okButton = QPushButton('OK')
        self.okButton.setMaximumWidth(100)

        gridLayout = QGridLayout()
        gridLayout.addWidget(self.itemLbl,1,0)
        gridLayout.addWidget(self.itemList,2,0,6,1)


        gridLayout.addWidget(self.objLbl,2,1)
        gridLayout.addWidget(self.objTxt,3,1)
        gridLayout.addWidget(self.renameLbl,4,1)
        gridLayout.addWidget(self.renameTxt,5,1)
        gridLayout.addWidget(self.okButton,7,1)

        self.setLayout(gridLayout)  
        self.setWindowTitle("Testing")

Answer 1

在“确定”按钮上方插入一个垂直拉伸的垫片：

    gridLayout.addWidget(self.renameTxt,5,1)

    gridLayout.addItem(QSpacerItem(
        0, 0, QSizePolicy.Minimum, QSizePolicy.Expanding), 6, 1)

    gridLayout.addWidget(self.okButton,7,1)