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Button before.py
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Button before.py
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from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtWidgets import QLineEdit, QToolButton
from PyQt5.QtWidgets import QLayout, QGridLayout
class Calculator(QWidget):
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)
# Digit Buttons
self.digitButton = [x for x in range(0, 10)]
self.digitButton[0] = QToolButton()
self.digitButton[0].setText('0')
self.digitButton[1] = QToolButton()
self.digitButton[1].setText('1')
self.digitButton[2] = QToolButton()
self.digitButton[2].setText('2')
self.digitButton[3] = QToolButton()
self.digitButton[3].setText('3')
self.digitButton[4] = QToolButton()
self.digitButton[4].setText('4')
self.digitButton[5] = QToolButton()
self.digitButton[5].setText('5')
self.digitButton[6] = QToolButton()
self.digitButton[6].setText('6')
self.digitButton[7] = QToolButton()
self.digitButton[7].setText('7')
self.digitButton[8] = QToolButton()
self.digitButton[8].setText('8')
self.digitButton[9] = QToolButton()
self.digitButton[9].setText('9')
# . and = Buttons
self.decButton = QToolButton()
self.decButton.setText('.')
self.eqButton = QToolButton()
self.eqButton.setText('=')
# Operator Buttons
self.mulButton = QToolButton()
self.mulButton.setText('*')
self.divButton = QToolButton()
self.divButton.setText('/')
self.addButton = QToolButton()
self.addButton.setText('+')
self.subButton = QToolButton()
self.subButton.setText('-')
# Parentheses Buttons
self.lparButton = QToolButton()
self.lparButton.setText('(')
self.rparButton = QToolButton()
self.rparButton.setText(')')
# Clear Button
self.clearButton = QToolButton()
self.clearButton.setText('C')
# Layout
mainLayout = QGridLayout()
mainLayout.setSizeConstraint(QLayout.SetFixedSize)
mainLayout.addWidget(self.display, 0, 0, 1, 2)
# Button
numLayout = QGridLayout()
numLayout.addWidget(self.digitButton[i], r, c)
for i in range(0, 10):
if i == 0:
r = 3
c = 0
elif i != 0:
if (i % 3 == 1):
c = 0
elif (i % 3 == 2):
c = 1
else:
c = 2
if int(i / 3) == 0 and i != 0:
r = 2
elif int(i / 3) == 1:
if i == 3:
r = 2
else:
r = 1
elif int(i / 3) == 2:
if i == 6:
r = 1
else:
r = 0
elif int(i / 3) == 3:
r = 0
numLayout.addWidget(self.decButton, 3, 1)
numLayout.addWidget(self.eqButton, 3, 2)
mainLayout.addLayout(numLayout, 1, 0)
opLayout = QGridLayout()
opLayout.addWidget(self.mulButton, 0, 0)
opLayout.addWidget(self.divButton, 0, 1)
opLayout.addWidget(self.addButton, 1, 0)
opLayout.addWidget(self.subButton, 1, 1)
opLayout.addWidget(self.lparButton, 2, 0)
opLayout.addWidget(self.rparButton, 2, 1)
opLayout.addWidget(self.clearButton, 3, 0)
mainLayout.addLayout(opLayout, 1, 1)
self.setLayout(mainLayout)
self.setWindowTitle("My Calculator")
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
calc = Calculator()
calc.show()
sys.exit(app.exec_())