使用工具eric6

安装包地址：

http://eric-ide.python-projects.org/eric-download.html

1.需要安装python和pyqt为前提，然后安装eric
2.安装好后在 C:\Python27\Lib\site-packages\eric6 路径下找到 eric6.pyw ,打开eric6
3.第一次打开需要设置API等参数

4.使用qt编辑器开发ui界面

5.在eric内ui文件上右键编译窗体
6.生成对话框代码
计算器测试程序

# -*- coding: utf-8 -*-"""
Module implementing Dialog_calc.
"""from PyQt4.QtCore import pyqtSignature
from PyQt4.QtGui import QDialogfrom Ui_UI_calc import Ui_Dialogfrom PyQt4 import QtCore, QtGui
import sysclass Dialog_calc(QDialog, Ui_Dialog):"""Class documentation goes here."""lcdstring = ''operation = ''currentNum = 0prevlousNum = 0result = 0def __init__(self, parent=None):"""Constructor@param parent reference to the parent widget@type QWidget"""QDialog.__init__(self, parent)self.setupUi(self)self.action()def action(self):#定义信号和槽关系#按下数字执行的方法self.connect(self.pb0, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb1, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb2, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb3, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb4, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb5, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb6, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb7, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb8, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb9, QtCore.SIGNAL('clicked()'), self.buttonClicked)self.connect(self.pb_point, QtCore.SIGNAL('clicked()'), self.buttonClicked)#按下操作执行的方法self.connect(self.pb_plus, QtCore.SIGNAL('clicked()'), self.opClicked)self.connect(self.pb_sub, QtCore.SIGNAL('clicked()'), self.opClicked)self.connect(self.pb_mul, QtCore.SIGNAL('clicked()'), self.opClicked)self.connect(self.pb_div, QtCore.SIGNAL('clicked()'), self.opClicked)#按下清除执行的方法self.connect(self.pb_clear, QtCore.SIGNAL('clicked()'), self.clearClicked)#按下等于号执行的方法self.connect(self.pb_eq, QtCore.SIGNAL('clicked()'), self.eqClicked)def buttonClicked(self):#最多显示8位# print len(Dialog_calc.lcdstring)if len(Dialog_calc.lcdstring) <= 7 :Dialog_calc.lcdstring += self.sender().text()#第一个输入的是小数点时候替替换为0.if Dialog_calc.lcdstring == '.':Dialog_calc.lcdstring = '0.'#去掉多次输入小数点时候的错误elif str(Dialog_calc.lcdstring).count('.') > 1:Dialog_calc.lcdstring = str(Dialog_calc.lcdstring)[:-1]self.lcd.display(Dialog_calc.lcdstring)Dialog_calc.currentNum = float(Dialog_calc.lcdstring)def opClicked(self):Dialog_calc.prevlousNum = Dialog_calc.currentNumDialog_calc.currentNum = 0Dialog_calc.lcdstring = ''Dialog_calc.operation = self.sender().objectName()def clearClicked(self):Dialog_calc.lcdstring = ''Dialog_calc.operation = ''Dialog_calc.currentNum = 0Dialog_calc.prevlousNum = 0Dialog_calc.result = 0self.lcd.display('0')def eqClicked(self):if Dialog_calc.operation == 'pb_plus':Dialog_calc.result = Dialog_calc.prevlousNum + Dialog_calc.currentNumself.lcd.display(Dialog_calc.result)elif Dialog_calc.operation == 'pb_sub':Dialog_calc.result = Dialog_calc.prevlousNum - Dialog_calc.currentNumself.lcd.display(Dialog_calc.result)elif Dialog_calc.operation == 'pb_mul':Dialog_calc.result = Dialog_calc.prevlousNum * Dialog_calc.currentNumself.lcd.display(Dialog_calc.result)elif Dialog_calc.operation == 'pb_div':if Dialog_calc.currentNum == 0:self.lcd.display('Error')Dialog_calc.result = 0else:Dialog_calc.result = Dialog_calc.prevlousNum / Dialog_calc.currentNumself.lcd.display(Dialog_calc.result)Dialog_calc.currentNum = Dialog_calc.resultDialog_calc.lcdstring = ''def closeEvent(self, QCloseEvent):reply = QtGui.QMessageBox.question(self,u'警告',u'是否退出',QtGui.QMessageBox.Yes,QtGui.QMessageBox.No)if reply == QtGui.QMessageBox.Yes:QCloseEvent.accept()else:QCloseEvent.ignore()if __name__ == '__main__':app = QtGui.QApplication(sys.argv)mycalc = Dialog_calc()mycalc.show()sys.exit(app.exec_())

7.F2运行代码，当然也可以用PyCharm去写，比较习惯点。