Project-3
Calculator on tkinter
In this project, we can learn how to build a calculator.
Here is the image of this calculator-
Tap this code and select "copy" button to copy this code.
Code - calculator.py
from tkinter import *
import math
import tkinter.messagebox
root = Tk()
root.title("Scientific Calculator")
root.configure(background = 'white')
root.resizable(width=True, height=True)
root.geometry("480x568+450+90")
calc = Frame(root)
calc.grid()
class Calc():
def __init__(self):
self.total=0
self.current=''
self.input_value=True
self.check_sum=False
self.op=''
self.result=False
def numberEnter(self, num):
self.result=False
firstnum=txtDisplay.get()
secondnum=str(num)
if self.input_value:
self.current = secondnum
self.input_value=False
else:
if secondnum == '.':
if secondnum in firstnum:
return
self.current = firstnum+secondnum
self.display(self.current)
def sum_of_total(self):
self.result=True
self.current=float(self.current)
if self.check_sum==True:
self.valid_function()
else:
self.total=float(txtDisplay.get())
def display(self, value):
txtDisplay.delete(0, END)
txtDisplay.insert(0, value)
def valid_function(self):
if self.op == "add":
self.total += self.current
if self.op == "sub":
self.total -= self.current
if self.op == "multi":
self.total *= self.current
if self.op == "divide":
self.total /= self.current
if self.op == "mod":
self.total %= self.current
self.input_value=True
self.check_sum=False
self.display(self.total)
def operation(self, op):
self.current = float(self.current)
if self.check_sum:
self.valid_function()
elif not self.result:
self.total=self.current
self.input_value=True
self.check_sum=True
self.op=op
self.result=False
def Clear_Entry(self):
self.result = False
self.current = "0"
self.display(0)
self.input_value=True
def All_Clear_Entry(self):
self.Clear_Entry()
self.total=0
def pi(self):
self.result = False
self.current = math.pi
self.display(self.current)
def tau(self):
self.result = False
self.current = math.tau
self.display(self.current)
def e(self):
self.result = False
self.current = math.e
self.display(self.current)
def mathPM(self):
self.result = False
self.current = -(float(txtDisplay.get()))
self.display(self.current)
def squared(self):
self.result = False
self.current = math.sqrt(float(txtDisplay.get()))
self.display(self.current)
def cos(self):
self.result = False
self.current = math.cos(math.radians(float(txtDisplay.get())))
self.display(self.current)
def cosh(self):
self.result = False
self.current = math.cosh(math.radians(float(txtDisplay.get())))
self.display(self.current)
def tan(self):
self.result = False
self.current = math.tan(math.radians(float(txtDisplay.get())))
self.display(self.current)
def tanh(self):
self.result = False
self.current = math.tanh(math.radians(float(txtDisplay.get())))
self.display(self.current)
def sin(self):
self.result = False
self.current = math.sin(math.radians(float(txtDisplay.get())))
self.display(self.current)
def sinh(self):
self.result = False
self.current = math.sinh(math.radians(float(txtDisplay.get())))
self.display(self.current)
def log(self):
self.result = False
self.current = math.log(float(txtDisplay.get()))
self.display(self.current)
def exp(self):
self.result = False
self.current = math.exp(float(txtDisplay.get()))
self.display(self.current)
def acosh(self):
self.result = False
self.current = math.acosh(float(txtDisplay.get()))
self.display(self.current)
def asinh(self):
self.result = False
self.current = math.asinh(float(txtDisplay.get()))
self.display(self.current)
def expm1(self):
self.result = False
self.current = math.expm1(float(txtDisplay.get()))
self.display(self.current)
def lgamma(self):
self.result = False
self.current = math.lgamma(float(txtDisplay.get()))
self.display(self.current)
def degrees(self):
self.result = False
self.current = math.degrees(float(txtDisplay.get()))
self.display(self.current)
def log2(self):
self.result = False
self.current = math.log2(float(txtDisplay.get()))
self.display(self.current)
def log10(self):
self.result = False
self.current = math.log10(float(txtDisplay.get()))
self.display(self.current)
def log1p(self):
self.result = False
self.current = math.log1p(float(txtDisplay.get()))
self.display(self.current)
added_value = Calc()
txtDisplay = Entry(calc, font=('Helvetica',20,'bold'),
bg='#36454F',fg='white',
bd=30,width=28,justify=RIGHT)
txtDisplay.grid(row=0,column=0, columnspan=4, pady=1)
txtDisplay.insert(0,"0")
numberpad = "789456123"
i=0
btn = []
for j in range(2,5):
for k in range(3):
btn.append(Button(calc, width=6, height=2,
bg='#AFE1AF',fg='white',
font=('Helvetica',20,'bold'),
bd=4,text=numberpad[i]))
btn[i].grid(row=j, column= k, pady = 1)
btn[i]["command"]=lambda x=numberpad[i]:added_value.numberEnter(x)
i+=1
btnClear = Button(calc, text=chr(67),width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold')
,bd=4, command=added_value.Clear_Entry
).grid(row=1, column= 0, pady = 1)
btnAllClear = Button(calc, text=chr(67)+chr(69),
width=6, height=2,
bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,
command=added_value.All_Clear_Entry
).grid(row=1, column= 1, pady = 1)
btnsq = Button(calc, text="\u221A",width=6, height=2,
bg='#7393B3', font=('Helvetica',
20,'bold'),
bd=4,command=added_value.squared
).grid(row=1, column= 2, pady = 1)
btnAdd = Button(calc, text="+",width=6, height=2,
bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.operation("add")
).grid(row=1, column= 3, pady = 1)
btnSub = Button(calc, text="-",width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.operation("sub")
).grid(row=2, column= 3, pady = 1)
btnMul = Button(calc, text="x",width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.operation("multi")
).grid(row=3, column= 3, pady = 1)
btnDiv = Button(calc, text="/",width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.operation("divide")
).grid(row=4, column= 3, pady = 1)
btnZero = Button(calc, text="0",width=6,
height=2,bg='#AFE1AF',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.numberEnter(0)
).grid(row=5, column= 0, pady = 1)
btnDot = Button(calc, text=".",width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.numberEnter(".")
).grid(row=5, column= 1, pady = 1)
btnPM = Button(calc, text=chr(177),width=6,
height=2,bg='#7393B3', font=('Helvetica',20,'bold'),
bd=4,command=added_value.mathPM
).grid(row=5, column= 2, pady = 1)
btnEquals = Button(calc, text="=",width=6,
height=2,bg='#7393B3',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.sum_of_total
).grid(row=5, column= 3, pady = 1)
# ROW 1 :
btnPi = Button(calc, text="pi",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.pi
).grid(row=1, column= 4, pady = 1)
btnCos = Button(calc, text="Cos",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.cos
).grid(row=1, column= 5, pady = 1)
btntan = Button(calc, text="tan",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.tan
).grid(row=1, column= 6, pady = 1)
btnsin = Button(calc, text="sin",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.sin
).grid(row=1, column= 7, pady = 1)
# ROW 2 :
btn2Pi = Button(calc, text="2pi",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.tau
).grid(row=2, column= 4, pady = 1)
btnCosh = Button(calc, text="Cosh",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.cosh
).grid(row=2, column= 5, pady = 1)
btntanh = Button(calc, text="tanh",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.tanh
).grid(row=2, column= 6, pady = 1)
btnsinh = Button(calc, text="sinh",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.sinh
).grid(row=2, column= 7, pady = 1)
# ROW 3 :
btnlog = Button(calc, text="log",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.log
).grid(row=3, column= 4, pady = 1)
btnExp = Button(calc, text="exp",width=6, height=2,
bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.exp
).grid(row=3, column= 5, pady = 1)
btnMod = Button(calc, text="Mod",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=lambda:added_value.operation("mod")
).grid(row=3, column= 6, pady = 1)
btnE = Button(calc, text="e",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.e
).grid(row=3, column= 7, pady = 1)
# ROW 4 :
btnlog10 = Button(calc, text="log10",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.log10
).grid(row=4, column= 4, pady = 1)
btncos = Button(calc, text="log1p",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.log1p
).grid(row=4, column= 5, pady = 1)
btnexpm1 = Button(calc, text="expm1",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd = 4,command=added_value.expm1
).grid(row=4, column= 6, pady = 1)
btngamma = Button(calc, text="gamma",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.lgamma
).grid(row=4, column= 7, pady = 1)
# ROW 5 :
btnlog2 = Button(calc, text="log2",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.log2
).grid(row=5, column= 4, pady = 1)
btndeg = Button(calc, text="deg",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.degrees
).grid(row=5, column= 5, pady = 1)
btnacosh = Button(calc, text="acosh",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.acosh
).grid(row=5, column= 6, pady = 1)
btnasinh = Button(calc, text="asinh",width=6,
height=2,bg='#301934',fg='white',
font=('Helvetica',20,'bold'),
bd=4,command=added_value.asinh
).grid(row=5, column= 7, pady = 1)
lblDisplay = Label(calc, text = "Scientific Calculator",
font=('Helvetica',30,'bold'),
bg='#301934',fg='white',justify=CENTER)
lblDisplay.grid(row=0, column= 4,columnspan=4)
def iExit():
iExit = tkinter.messagebox.askyesno("Scientific Calculator",
"Do you want to exit ?")
if iExit>0:
root.destroy()
return
def Scientific():
root.resizable(width=False, height=False)
root.geometry("944x568+0+0")
def Standard():
root.resizable(width=False, height=False)
root.geometry("480x568+0+0")
menubar = Menu(calc)
# ManuBar 1 :
filemenu = Menu(menubar, tearoff = 0)
menubar.add_cascade(label = 'File', menu = filemenu)
filemenu.add_command(label = "Standard", command = Standard)
filemenu.add_command(label = "Scientific", command = Scientific)
filemenu.add_separator()
filemenu.add_command(label = "Exit", command = iExit)
root.config(menu=menubar)
root.mainloop()