实用计算器代码,Python代码库,德仔网

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【Python】实用计算器
作者:灏明 / 发布于2014/12/10/ 874
实现功能：图形界面PyQt，输入框，+，—，*，/ ；乘方，开方，取余，清零。

	#!/usr/bin/env python
	# -*- coding: utf-8 -*-
	'''
	Author : Mr.LiuYC
	
	Created on 2014-09-30
	
	E-Mail : liuyanchen0725@gmail.com
	
	Introduction: 简易计算器 实现图形界面PyQt，输入框，+，&mdash;，*，/ ；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_())

	

	

	#!/usr/bin/env python
	# -*- coding: utf-8 -*-
	'''
	Author : Mr.LiuYC
	
	Created on 2014-09-30
	
	E-Mail : liuyanchen0725@gmail.com
	
	Introduction: 简易计算器 实现图形界面PyQt，输入框，+，&mdash;，*，/ ；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_())
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