def buttonClicked(self):
except_list = ['Error!', '0']
if self.display.text() in except_list:
self.display.setText('')
button = self.sender()
key = button.text()
key_dic = {}
if key == '=':
try:
result = str(eval(self.display.text()))
except:
result = 'Error!'
self.display.setText(result)
elif key == 'C':
self.display.clear()
elif key in constantDic.keys():
self.display.setText(self.display.text() + constantDic[key])
elif key in functionDic.keys():
n = eval(self.display.text())
value = eval(functionDic[key])
self.display.setText(str(value))
else:
self.display.setText(self.display.text() + key)
def __init__(self, parent=None):
super().__init__(parent)
# Display Window
self.display = QLineEdit('0')
self.display.setReadOnly(True)
self.display.setAlignment(Qt.AlignRight)
self.display.setMaxLength(15)
# Button Creation and Placement
numLayout = QGridLayout()
opLayout = QGridLayout()
constLayout = QGridLayout()
funcLayout = QGridLayout()
buttonGroups = {
'num': {
'buttons': numPadList,
'layout': numLayout
},
'op': {
'buttons': operatorList,
'layout': opLayout
},
'constants': {
'buttons': [[x] for x in constantDic.keys()],
'layout': constLayout
},
'functions': {
'buttons': [[x] for x in functionDic.keys()],
'layout': funcLayout
},
}
for label in buttonGroups.keys():
buttonPad = buttonGroups[label]
for row, btn_list in enumerate(buttonPad['buttons']):
for col, btnText in enumerate(btn_list):
button = Button(btnText, self.buttonClicked)
buttonPad['layout'].addWidget(button, row, col)
# Layout
mainLayout = QGridLayout()
mainLayout.setSizeConstraint(QLayout.SetFixedSize)
mainLayout.addWidget(self.display, 0, 0, 1, 2)
mainLayout.addLayout(numLayout, 1, 0)
mainLayout.addLayout(opLayout, 1, 1)
mainLayout.addLayout(constLayout, 2, 0)
mainLayout.addLayout(funcLayout, 2, 1)
self.setLayout(mainLayout)
self.setWindowTitle("My Calculator")
def buttonClicked(self):
if self.display.text() == 'Error!':
self.display.setText('')
button = self.sender()
key = button.text()
if key == '=':
try:
result = str(eval(self.display.text()))
except:
result = 'Error!'
self.display.setText(result)
elif key == 'C':
self.display.clear()
# 버튼의 개수가 늘어나면 좋은 코드가 아님, 반복이 심함
elif key in constantDic.keys():
self.display.setText(self.display.text() + constantDic[key])
elif key in functionDic.keys():
n = self.display.text()
value = eval('calcFunctions.' + functionDic[key] + '(n)')
self.display.setText((str(value)))
# elif key == constantList[0]:
# self.display.setText(self.display.text() + '3.141592')
# elif key == constantList[1]:
# self.display.setText(self.display.text() + '3E+8')
# elif key == constantList[2]:
# self.display.setText(self.display.text() + '340')
# elif key == constantList[3]:
# self.display.setText(self.display.text() + '1.5E+8')
# elif key == functionList[0]:
# n = self.display.text()
# value = calcFunctions.factorial(n)
# self.display.setText(str(value))
# elif key == functionList[1]:
# n = self.display.text()
# value = calcFunctions.decToBin(n)
# self.display.setText(str(value))
# elif key == functionList[2]:
# n = self.display.text()
# value = calcFunctions.binToDec(n)
# self.display.setText(str(value))
# elif key == functionList[3]:
# n = self.display.text()
# value = calcFunctions.decToRoman(n)
# self.display.setText(str(value))
else:
self.display.setText(self.display.text() + key)