在PyQt5中加载.ui文件会导致延迟

Question

我正在使用PyQt5开发一个项目，我遇到了UI问题。我用Qt Designer创建了界面，生成了.ui文件，导入了代码，并在屏幕上显示了我想要的窗口。但是，我有一个问题。在屏幕上显示窗口会有第二次延迟。

这是.ui文件：

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Form</class>
 <widget class="QWidget" name="Form">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>461</width>
    <height>320</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Form</string>
  </property>
  <widget class="QLabel" name="label">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>20</y>
     <width>47</width>
     <height>13</height>
    </rect>
   </property>
   <property name="text">
    <string>TextLabel</string>
   </property>
  </widget>
  <widget class="QPushButton" name="pushButton">
   <property name="geometry">
    <rect>
     <x>180</x>
     <y>280</y>
     <width>75</width>
     <height>25</height>
    </rect>
   </property>
   <property name="text">
    <string>PushButton</string>
   </property>
  </widget>
  <widget class="QLineEdit" name="lineEdit">
   <property name="geometry">
    <rect>
     <x>120</x>
     <y>60</y>
     <width>80</width>
     <height>25</height>
    </rect>
   </property>
  </widget>
  <widget class="QLineEdit" name="lineEdit_2">
   <property name="geometry">
    <rect>
     <x>220</x>
     <y>60</y>
     <width>80</width>
     <height>25</height>
    </rect>
   </property>
  </widget>
  <widget class="QLineEdit" name="lineEdit_3">
   <property name="geometry">
    <rect>
     <x>320</x>
     <y>60</y>
     <width>80</width>
     <height>25</height>
    </rect>
   </property>
  </widget>
  <widget class="QLineEdit" name="lineEdit_4">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>60</y>
     <width>80</width>
     <height>25</height>
    </rect>
   </property>
  </widget>
  <widget class="QLabel" name="label_2">
   <property name="geometry">
    <rect>
     <x>310</x>
     <y>70</y>
     <width>47</width>
     <height>13</height>
    </rect>
   </property>
   <property name="text">
    <string>-</string>
   </property>
  </widget>
  <widget class="QLabel" name="label_3">
   <property name="geometry">
    <rect>
     <x>110</x>
     <y>70</y>
     <width>47</width>
     <height>13</height>
    </rect>
   </property>
   <property name="text">
    <string>-</string>
   </property>
  </widget>
  <widget class="QLabel" name="label_4">
   <property name="geometry">
    <rect>
     <x>210</x>
     <y>70</y>
     <width>47</width>
     <height>13</height>
    </rect>
   </property>
   <property name="text">
    <string>-</string>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections/>
</ui>

这是.py文件：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'uifiles/untitled.ui'
#
# Created by: PyQt5 UI code generator 5.9
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
import sys

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(461, 320)
        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(20, 20, 47, 13))
        self.label.setObjectName("label")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(180, 280, 75, 25))
        self.pushButton.setObjectName("pushButton")
        self.lineEdit = QtWidgets.QLineEdit(Form)
        self.lineEdit.setGeometry(QtCore.QRect(120, 60, 80, 25))
        self.lineEdit.setObjectName("lineEdit")
        self.lineEdit_2 = QtWidgets.QLineEdit(Form)
        self.lineEdit_2.setGeometry(QtCore.QRect(220, 60, 80, 25))
        self.lineEdit_2.setObjectName("lineEdit_2")
        self.lineEdit_3 = QtWidgets.QLineEdit(Form)
        self.lineEdit_3.setGeometry(QtCore.QRect(320, 60, 80, 25))
        self.lineEdit_3.setObjectName("lineEdit_3")
        self.lineEdit_4 = QtWidgets.QLineEdit(Form)
        self.lineEdit_4.setGeometry(QtCore.QRect(20, 60, 80, 25))
        self.lineEdit_4.setObjectName("lineEdit_4")
        self.label_2 = QtWidgets.QLabel(Form)
        self.label_2.setGeometry(QtCore.QRect(310, 70, 47, 13))
        self.label_2.setObjectName("label_2")
        self.label_3 = QtWidgets.QLabel(Form)
        self.label_3.setGeometry(QtCore.QRect(110, 70, 47, 13))
        self.label_3.setObjectName("label_3")
        self.label_4 = QtWidgets.QLabel(Form)
        self.label_4.setGeometry(QtCore.QRect(210, 70, 47, 13))
        self.label_4.setObjectName("label_4")

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.label.setText(_translate("Form", "TextLabel"))
        self.pushButton.setText(_translate("Form", "PushButton"))
        self.label_2.setText(_translate("Form", "-"))
        self.label_3.setText(_translate("Form", "-"))
        self.label_4.setText(_translate("Form", "-"))


class Window(QtWidgets.QWidget,Ui_Form):

    def __init__(self):

        QtWidgets.QWidget.__init__(self)
        Ui_Form.__init__(self)
        self.setupUi(self)

def main():

    app = QtWidgets.QApplication(sys.argv)

    m = Window()

    m.show()

    app.exec()


if __name__ == "__main__":

    main()

以下是延迟发生时屏幕保持状态的打印，大约1到2秒生成界面：

这是全屏：

我注意到任何延迟都在self.retranslateUi(Form)或者我尝试将setupUi()对象的特征设置为setText()或将项目与信号连接。

如果我在retranslateUi()中评论函数setupUi()的调用，则一切都会发生＆＃34;以及＃34; - 窗口没有任何延迟地执行，但是没有设置窗口小部件的信息。