课后作业-团队编程项目进度 （科学计算器）

Posted 2020-10-13

1. Python代码：

 

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#!/usr/bin/env python # -*- coding: utf-8 -*- ‘‘‘ Author : Mr.LiuYC Created on 2014-09-30 E-Mail : [email protected] Introduction: 简易计算器 实现图形界面PyQt，输入框，+，—，*，/ ；乘方 ，开方 ，取余，清零。 ‘‘‘ from PyQt4 import QtGui,QtCore import sys , math , string class Example(QtGui.QWidget):   def __init__(self,parent=None):     QtGui.QWidget.__init__(self,parent=parent)     self.initUI()     self.last = []   def initUI(self):     list = [‘%‘,‘**‘,‘sqrt‘,‘C‘,7,8,9,‘+‘,4,5,6,‘-‘,1,2,3,‘*‘,0,‘.‘,‘=‘,‘/‘]     length = len(list)     for i in xrange(length):       self.button = QtGui.QPushButton(str(list[i]),self)       self.button.clicked.connect(self.onButtonClick)       x = i % 4       y = i / 4       self.button.move(x * 40 + 10,y * 40 + 90)       self.button.resize(30,30)     self.lineEdit = QtGui.QLineEdit(‘‘,self)     self.lineEdit.move(10,10)     self.lineEdit.resize(150,70)     self.setGeometry(200, 200, 170, 300)     self.setWindowTitle(‘Quit buttom‘)     self.show()   def onButtonClick(self):     t = self.lineEdit.text()     new = self.sender().text()     self.last.append(new)     print self.last     self.lineEdit.setText(t+new)     if new == ‘=‘:       result = eval(str(t))       self.lineEdit.setText(str(result))     if new == ‘C‘:       self.lineEdit.setText(‘‘)     if new == ‘sqrt‘:       self.lineEdit.setText(‘‘)       result = math.sqrt(string.atof(t))       self.lineEdit.setText(str(result)) if __name__ == ‘__main__‘:   app = QtGui.QApplication(sys.argv)   e = Example()   sys.exit(app.exec_())

2. calculator.py

 

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#!/usr/bin/env python # -*- coding: utf-8 -*- ‘‘‘ Author : Mr.LiuYC Created on 2014-09-30 E-Mail : [email protected] Introduction: 简易计算器 实现图形界面PyQt，输入框，+，—，*，/ ；乘方 ，开方 ，取余，清零。 ‘‘‘ from PyQt4 import QtGui,QtCore import sys , math , string class Example(QtGui.QWidget):   def __init__(self,parent=None):     QtGui.QWidget.__init__(self,parent=parent)     self.initUI()     self.last = []   def initUI(self):     list = [‘%‘,‘**‘,‘sqrt‘,‘C‘,7,8,9,‘+‘,4,5,6,‘-‘,1,2,3,‘*‘,0,‘.‘,‘=‘,‘/‘]     length = len(list)     for i in xrange(length):       self.button = QtGui.QPushButton(str(list[i]),self)       self.button.clicked.connect(self.onButtonClick)       x = i % 4       y = i / 4       self.button.move(x * 40 + 10,y * 40 + 90)       self.button.resize(30,30)     self.lineEdit = QtGui.QLineEdit(‘‘,self)     self.lineEdit.move(10,10)     self.lineEdit.resize(150,70)     self.setGeometry(200, 200, 170, 300)     self.setWindowTitle(‘Quit buttom‘)     self.show()   def onButtonClick(self):     t = self.lineEdit.text()     new = self.sender().text()     self.last.append(new)     print self.last     self.lineEdit.setText(t+new)     if new == ‘=‘:       result = eval(str(t))       self.lineEdit.setText(str(result))     if new == ‘C‘:       self.lineEdit.setText(‘‘)     if new == ‘sqrt‘:       self.lineEdit.setText(‘‘)       result = math.sqrt(string.atof(t))       self.lineEdit.setText(str(result)) if __name__ == ‘__main__‘:   app = QtGui.QApplication(sys.argv)   e = Example()   sys.exit(app.exec_())

3. 运行效果图如下：