¥20求完善以实现：

¥20求完善源码以实现：
1）Tab 1下的textBrowser_1和textBrowser_2能随MainWindow大小的变化而自适应占满其所空间。
2）textBrowser_1和textBrowser_2的内容都可以上下滑动scroll bar
谢谢！

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

from PyQt5 import QtCore, QtGui, QtWidgets

from PyQt5.QtWidgets import *
from PyQt5.QtCore import Qt

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        sp = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)

        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        MainWindow.setSizePolicy(sp)

        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")

        self.tabWidget = QtWidgets.QTabWidget(self.centralwidget) 
        self.tabWidget.setGeometry(QtCore.QRect(0, 0, 751, 541))
        self.tabWidget.setObjectName("tabWidget")
        self.tab_1 = QtWidgets.QWidget()
        self.tab_1.setObjectName("tab_1")

        self.splitter = QtWidgets.QSplitter(self.tab_1)
        self.splitter.setOrientation(QtCore.Qt.Horizontal)
        self.splitter.setObjectName("splitter")
        self.splitter.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)

        self.textBrowser_1 = QtWidgets.QTextBrowser(self.splitter)
        self.textBrowser_1.setGeometry(QtCore.QRect(0, 0, 321, 511))
        self.textBrowser_1.setText("textBrowser_1")
        self.textBrowser_1.setObjectName("textBrowser_1")
        self.textBrowser_1.setSizePolicy(sp)

        self.textBrowser_2 = QtWidgets.QTextBrowser(self.splitter)
        self.textBrowser_2.setGeometry(QtCore.QRect(325, 1, 421, 511))
        self.textBrowser_2.setText("textBrowser_2")
        self.textBrowser_2.setObjectName("textBrowser_2")
        self.textBrowser_2.setSizePolicy(sp)
        self.tabWidget.addTab(self.tab_1, "")

        self.tab_2 = QtWidgets.QWidget()
        self.tab_2.setObjectName("tab_2")
        self.tabWidget.addTab(self.tab_2, "")
        self.tab_2.setSizePolicy(sp)

        MainWindow.setCentralWidget(self.centralwidget)

        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)

        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.tabWidget.setCurrentIndex(0)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_1), _translate("MainWindow", "Tab 1"))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), _translate("MainWindow", "Tab 2"))

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.showMaximized()
    sys.exit(app.exec_())

如果不是把Eric玩崩了，这任务我接了。呜呜呜。。。