python PyQt5如何让窗口控件与窗口大小同步变化？

Question

   在下面的代码中 self.tableWidget.resize(self.width()-20,self.height()-20)

self.tableWidget.move(10,20)
这两行没有起作用？不知为何？
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import pandas as pd
import numpy as np

class Ui_MainWindow(QMainWindow):

def __init__(self):
    super(QtWidgets.QMainWindow,self).__init__()
    self.setupUi(self)
    self.retranslateUi(self)

def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(666, 488)
    self.centralWidget = QtWidgets.QWidget(MainWindow)
    self.centralWidget.setObjectName("centralWidget")
    self.retranslateUi(MainWindow)

    self.tableWidget = QtWidgets.QTableWidget(self.centralWidget)
    self.tableWidget.setGeometry(QtCore.QRect(0, 40, self.geometry().width(), self.geometry().height()-40))
    self.tableWidget.setObjectName("tableWidget")
    self.tableWidget.setColumnCount(0)
    self.tableWidget.setRowCount(0)
    self.tableWidget.setStyleSheet("selection-background-color:pink")
    self.tableWidget.setEditTriggers(QAbstractItemView.NoEditTriggers)
    self.tableWidget.raise_()

    self.pushButton = QtWidgets.QPushButton(self.centralWidget)
    self.pushButton.setGeometry(QtCore.QRect(90, 20, 75, 23))
    self.pushButton.setObjectName("pushButton")
    self.pushButton.setText("打开")
    MainWindow.setCentralWidget(self.centralWidget)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

    self.pushButton.clicked.connect(self.openfile)
    self.pushButton.clicked.connect(self.creat_table_show)

def retranslateUi(self, MainWindow):
    _translate = QtCore.QCoreApplication.translate
    MainWindow.setWindowTitle(_translate("MainWindow", "一颗数据小白菜"))


def openfile(self):

    ###获取路径===================================================================

    openfile_name = QFileDialog.getOpenFileName(self,'选择文件','','Excel files(*.xlsx , *.xls)')

    #print(openfile_name)
    global path_openfile_name


    ###获取路径====================================================================

    path_openfile_name = openfile_name[0]

def resizeEvent(self, e):
    #self.tableWidget.setGeometry(QtCore.QRect(0, 40, self.geometry().width(), self.geometry().height()-40))
    #QtWidgets.QWidget.resizeEvent(self, e)
    self.tableWidget.resize(self.width()-20,self.height()-20)
    self.tableWidget.move(10,20)

def creat_table_show(self):
    ###===========读取表格，转换表格，===========================================
    if len(path_openfile_name) > 0:
        input_table = pd.read_excel(path_openfile_name)
    #print(input_table)
        input_table_rows = input_table.shape[0]
        input_table_colunms = input_table.shape[1]
    #print(input_table_rows)
    #print(input_table_colunms)
        input_table_header = input_table.columns.values.tolist()
    #print(input_table_header)

    ###===========读取表格，转换表格，============================================
    ###======================给tablewidget设置行列表头============================

        self.tableWidget.setColumnCount(input_table_colunms)
        self.tableWidget.setRowCount(input_table_rows)
        self.tableWidget.setHorizontalHeaderLabels(input_table_header)

    ###======================给tablewidget设置行列表头============================

    ###================遍历表格每个元素，同时添加到tablewidget中========================
        for i in range(input_table_rows):
            input_table_rows_values = input_table.iloc[[i]]
            #print(input_table_rows_values)
            input_table_rows_values_array = np.array(input_table_rows_values)
            input_table_rows_values_list = input_table_rows_values_array.tolist()[0]
        #print(input_table_rows_values_list)
            for j in range(input_table_colunms):
                input_table_items_list = input_table_rows_values_list[j]
            #print(input_table_items_list)
            # print(type(input_table_items_list))

    ###==============将遍历的元素添加到tablewidget中并显示=======================

                input_table_items = str(input_table_items_list)
                newItem = QTableWidgetItem(input_table_items) 
                newItem.setTextAlignment(Qt.AlignHCenter|Qt.AlignVCenter)
                self.tableWidget.setItem(i, j, newItem)  

    ###================遍历表格每个元素，同时添加到tablewidget中========================
    else:
        self.centralWidget.show()

if name == "__main__":

import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())

下面的代码

from PyQt5.Qt import * #刚开始学习可以这样一下导入
import sys,time

class Window(QWidget):

def __init__(self):
    super().__init__()
    self.setWindowTitle("QLineEdit 输出模式的案例")
    self.resize(400,400)
    self.set_ui()
    self.i = 1
def set_ui(self):
    self.account_lineEdit = QLineEdit(self)
    self.pwd_lineEdit = QLineEdit(self)
    self.btn = QPushButton(self)


def resizeEvent(self, event):
    widget_w = 150
    widget_h = 30
    widget_h_margin = 10
    top_margin = 50

          self.account_lineEdit.resize(self.width()-60,widget_h)

    self.pwd_lineEdit.resize(widget_w,widget_h)

    self.btn.setText("登   录")
    self.btn.resize(widget_w,widget_h)

    x = (self.width() - widget_w)/2
    y1 = top_margin
    y2 = y1 + widget_h +widget_h_margin
    y3 = y2 + widget_h +widget_h_margin

    self.account_lineEdit.move(x,y1)
    self.account_lineEdit.move(30,20)
    self.pwd_lineEdit.move(x,y2)
    self.btn.move(x,y3)


    print(id(self.btn))
    print(len(self.children()))

    print("===",x,y1,y2,y3)
    print("i = ",self.i)
    self.i +=1

if name == "__main__":

app =QApplication(sys.argv)

window = Window()
window.show()

sys.exit(app.exec_())

下面的代码正常
self.account_lineEdit.resize(self.width()-60,widget_h)

Answer 1

等待大神解答