20241212

import sys

from PyQt5.QtWidgets import *

from PyQt5 import *

from PyQt5.QtGui import *

from PyQt5.QtCore import *

m=0

m=int(m)

l=0

l=int(l)

o=0

b=0

b=int(b)

def input(n,la1):

global m

m=m*10

m=m+n

la1.setText(str(m))

la1.repaint()

def operator(c,la1):

global o,m,l,b

if b==1:

operate(la1)

if c=='+':

o='+'

if c=='-':

o='-'

if c=='*':

o='*'

if c=='/':

o='/'

if l==0:

l=m

m=0

b=1

la1.setText(str(m))

la1.repaint()

def clear(la1):

global l,m

l=0

m=0

la1.setText(str(m))

la1.repaint()

def operate(la1):

global l,m,o,b

a=0

a=int(a)

err = 0

err = int(a)

if o=='+':

a=l+m

if o=='-':

a=l-m

if o=='*':

a=l*m

if o=='/':

if m==0:

err=1

else:

a=l/m

l=a

m=0

b=0

if err==1:

la1.setText("ERROR 140: ANSWER_UNDEFINED;INPUTS_CLEARED")

la1.repaint()

else:

la1.setText(str(a))

la1.repaint()

class MyApp(QWidget):

global m

def __init__(self):

super().__init__()

def initUI(self):

lbl1 = QLabel('0', self)

btn1 = QPushButton('&1', self)

btn1.clicked.connect(lambda: input(1,lbl1))

btn2 = QPushButton('&2', self)

btn2.clicked.connect(lambda: input(2, lbl1))

btn3 = QPushButton('&3', self)

btn3.clicked.connect(lambda: input(3, lbl1))

btnp=QPushButton('&+',self)

btnp.clicked.connect(lambda: operator("+",lbl1))

btn4 = QPushButton('&4', self)

btn4.clicked.connect(lambda: input(4, lbl1))

btn5 = QPushButton('&5', self)

btn5.clicked.connect(lambda: input(5, lbl1))

btn6 = QPushButton('&6', self)

btn6.clicked.connect(lambda: input(6, lbl1))

btnm = QPushButton('&-', self)

btnm.clicked.connect(lambda: operator("-", lbl1))

btn7 = QPushButton('&7', self)

btn7.clicked.connect(lambda: input(7, lbl1))

btn8 = QPushButton('&8', self)

btn8.clicked.connect(lambda: input(8, lbl1))

btn9 = QPushButton('&9', self)

btn9.clicked.connect(lambda: input(9, lbl1))

btnt = QPushButton('&x', self)

btnt.clicked.connect(lambda: operator("*", lbl1))

btnc = QPushButton('&C', self)

btnc.clicked.connect(lambda: clear(lbl1))

btn0 = QPushButton('&0', self)

btn0.clicked.connect(lambda: input(0, lbl1))

btnd = QPushButton('&÷', self)

btnd.clicked.connect(lambda: operator("/", lbl1))

btne = QPushButton('&=', self)

btne.clicked.connect(lambda: operate(lbl1))

hbox = QHBoxLayout()

hbox.addStretch(1)

hbox.addWidget(lbl1)

hbox.addStretch(0)

hboxr1=QHBoxLayout()

hboxr1.addStretch(1)

hboxr1.addWidget(btn1)

hboxr1.addWidget(btn2)

hboxr1.addWidget(btn3)

hboxr1.addWidget(btnp)

hboxr1.addStretch(1)

hboxr2 = QHBoxLayout()

hboxr2.addStretch(1)

hboxr2.addWidget(btn4)

hboxr2.addWidget(btn5)

hboxr2.addWidget(btn6)

hboxr2.addWidget(btnm)

hboxr2.addStretch(1)

hboxr3 = QHBoxLayout()

hboxr3.addStretch(1)

hboxr3.addWidget(btn7)

hboxr3.addWidget(btn8)

hboxr3.addWidget(btn9)

hboxr3.addWidget(btnt)

hboxr3.addStretch(1)

hboxr4 = QHBoxLayout()

hboxr4.addStretch(1)

hboxr4.addWidget(btnc)

hboxr4.addWidget(btn0)

hboxr4.addWidget(btnd)

hboxr4.addWidget(btne)

hboxr4.addStretch(1)

vbox = QVBoxLayout()

vbox.addWidget(lbl1)

vbox.addStretch(1)

vbox.addLayout(hboxr1)

vbox.addLayout(hboxr2)

vbox.addLayout(hboxr3)

vbox.addLayout(hboxr4)

vbox.addStretch(2)

lbl1.setStyleSheet("color: green;"

"border-style: solid;"

"border-width: 1px;"

"border-color: #0000CD;"

"border-radius: 10px")

btnp.setStyleSheet("color: black;"

"background-color: #FF8C00")

btnm.setStyleSheet("color: black;"

"background-color: #FF8C00")

btnt.setStyleSheet("color: black;"

"background-color: #FF8C00")

btnd.setStyleSheet("color: black;"

"background-color: #FF8C00")

btnc.setStyleSheet("color: black;"

"background-color: #FFD700")

btne.setStyleSheet("color: white;"

"background-color: #4169E1")

self.setLayout(vbox)

self.setGeometry(300, 300, 300, 200)

self.setWindowTitle('Calculator')

self.show()

if __name__ == '__main__':

app = QApplication(sys.argv)

ex = MyApp()

ex.initUI()

sys.exit(app.exec_())