Scientific calculator in Python

In this post, you will learn how to develop a scientific calculator in the Python programming language using the tkinter.

A scientific calculator is an electronic calculator, designed to perform mathematical operations. Scientific calculators are widely used in situations that require speedy access to certain mathematical functions, particularly those that were once looked up in mathematical tables, such as trigonometric functions, matrix calculations, or logarithms. By definition, a scientific calculator is a calculator designed to help you compute advanced functions in science, engineering, and mathematics problems.

Tkinter is a standard cross-platform package for creating graphical user interfaces (GUIs). It is also called the Tk interface. It is an original GUI library for Tcl (Tool Command Language). Tkinter comes pre-installed with Python. The greatest strength of Tkinter is its simplicity. It comes with a wide range of necessary widgets for almost all common tasks, like text, buttons, radio buttons, checkboxes, scales, labels, or drawing canvas.

Here, we developed a simple GUI Scientific Calculator using Python that allows you to perform simple and complex calculations.

Steps wise implementation of Scientific calculator in Python

Step1: Import necessary modules

from tkinter import *
import math
import tkinter.messagebox

Step2: Create layout of calculator using tkinter

Here, we create the geometry and set the width and height of the GUI by using Tkinter.

root = Tk()
root.title("Scientific Calculator")
root.configure(background = 'gray')
root.resizable(width=False, height=False)
root.geometry("450x568+450+90")
calc = Frame(root)
calc.grid()

Step3: Function to perform operations

Next, we create a class and define all the functions of the scientific calculator, so that we can call it easily.

class Calc():
    def __init__(self):
        self.total=0
        self.current=''
        self.user_input=True
        self.check_sum=False
        self.op=''
        self.result=False
 
    def numberInput(self, num):
        self.result=False
        numInput1=txtDisplay.get()
        numInput2=str(num)
        if self.user_input:
            self.current = numInput2
            self.user_input=False
        else:
            if numInput2 == '.':
                if numInput2 in numInput1:
                    return
            self.current = numInput1+numInput2
        self.display(self.current)
 
    def totalSum(self):
        self.result=True
        self.current=float(self.current)
        if self.check_sum==True:
            self.mainFunction()
        else:
            self.total=float(txtDisplay.get())
 
    def display(self, value):
        txtDisplay.delete(0, END)
        txtDisplay.insert(0, value)
 
    def mainFunction(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.user_input=True
        self.check_sum=False
        self.display(self.total)
 
    def operation(self, op):
        self.current = float(self.current)
        if self.check_sum:
            self.mainFunction()
        elif not self.result:
            self.total=self.current
            self.user_input=True
        self.check_sum=True
        self.op=op
        self.result=False
 
    def clearScreen(self):
        self.result = False
        self.current = "0"
        self.display(0)
        self.user_input=True
 
    def clearAllEntry(self):
        self.clearScreen()
        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()

Step 4: Set display of calculator

Next, we set the font attributes, background colour, foreground colour, and width as parameters inside the entry function. It creates a display of the GUI of the calculator.

txtDisplay = Entry(calc, font=('Helvetica',20,'bold'),
                   bg='black',fg='white',
                   bd=30,width=28,justify=RIGHT)
txtDisplay.grid(row=0,column=0, columnspan=4, pady=1)
txtDisplay.insert(0,"0")

Step5: Creating a number pad for calculation

numberpad = "123456789"
i=0
btn = []
for j in range(2,5):
    for k in range(3):
        btn.append(Button(calc, width=6, height=2,
                          bg='black',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.numberInput(x)
        i+=1

Step6: Set the position of buttons

Here, we set the respective positions of buttons in a grid and pass the name of the operator, width, height, background, foreground, font, and respective column and row positions of the button as parameters inside the button function.

btnClear = Button(calc, text=chr(67),width=6,
                  height=2,bg='light blue',
                  font=('Helvetica',20,'bold')
                  ,bd=4, command=added_value.clearScreen
                 ).grid(row=1, column= 0, pady = 1)
 
btnAllClear = Button(calc, text=chr(67)+chr(69),
                     width=6, height=2,
                     bg='light blue',
                     font=('Helvetica',20,'bold'),
                     bd=4,
                     command=added_value.clearAllEntry
                    ).grid(row=1, column= 1, pady = 1)
 
btnsq = Button(calc, text="\u221A",width=6, height=2,
               bg='light blue', 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='light blue',
                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='light blue',
                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='light blue',
                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='light blue',
                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='black',fg='white',
                 font=('Helvetica',20,'bold'),
                 bd=4,command=lambda:added_value.numberInput(0)
                 ).grid(row=5, column= 0, pady = 1)
 
btnDot = Button(calc, text=".",width=6,
                height=2,bg='light blue',
                font=('Helvetica',20,'bold'),
                bd=4,command=lambda:added_value.numberInput(".")
                ).grid(row=5, column= 1, pady = 1)
btnPM = Button(calc, text=chr(177),width=6,
               height=2,bg='light blue', 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='light blue',
                   font=('Helvetica',20,'bold'),
                   bd=4,command=added_value.totalSum
                  ).grid(row=5, column= 3, pady = 1)
# ROW 1 :
btnPi = Button(calc, text="pi",width=6,
               height=2,bg='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',fg='white',justify=CENTER)
 
lblDisplay.grid(row=0, column= 4,columnspan=4)

Step7: Create a menubar of the calculator GUI

def isExit():
    isExit = tkinter.messagebox.askyesno("Scientific Calculator",
                                        "Do you want to exit?")
    if isExit>0:
        root.destroy()
        return
 
def Scientific():
    root.resizable(width=False, height=False)
    root.geometry("945x568+0+0")
 
 
def Standard():
    root.resizable(width=False, height=False)
    root.geometry("480x568+0+0")
 
menubar = Menu(calc)
 
# MenuBar1 :
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 = isExit)
 
# MenuBar2 :
editmenu = Menu(menubar, tearoff = 0)
menubar.add_cascade(label = 'Edit', menu = editmenu)
editmenu.add_command(label = "Cut")
editmenu.add_command(label = "Copy")
editmenu.add_separator()
editmenu.add_command(label = "Paste")
 
root.config(menu=menubar)
 
root.mainloop()

Complete code:

from tkinter import *
import math
import tkinter.messagebox
 
root = Tk()
root.title("Scientific Calculator")
root.configure(background = 'gray')
root.resizable(width=False, height=False)
root.geometry("450x568+450+90")
calc = Frame(root)
calc.grid()
 
class Calc():
    def __init__(self):
        self.total=0
        self.current=''
        self.user_input=True
        self.check_sum=False
        self.op=''
        self.result=False
 
    def numberInput(self, num):
        self.result=False
        numInput1=txtDisplay.get()
        numInput2=str(num)
        if self.user_input:
            self.current = numInput2
            self.user_input=False
        else:
            if numInput2 == '.':
                if numInput2 in numInput1:
                    return
            self.current = numInput1+numInput2
        self.display(self.current)
 
    def totalSum(self):
        self.result=True
        self.current=float(self.current)
        if self.check_sum==True:
            self.mainFunction()
        else:
            self.total=float(txtDisplay.get())
 
    def display(self, value):
        txtDisplay.delete(0, END)
        txtDisplay.insert(0, value)
 
    def mainFunction(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.user_input=True
        self.check_sum=False
        self.display(self.total)
 
    def operation(self, op):
        self.current = float(self.current)
        if self.check_sum:
            self.mainFunction()
        elif not self.result:
            self.total=self.current
            self.user_input=True
        self.check_sum=True
        self.op=op
        self.result=False
 
    def clearScreen(self):
        self.result = False
        self.current = "0"
        self.display(0)
        self.user_input=True
 
    def clearAllEntry(self):
        self.clearScreen()
        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='black',fg='white',
                   bd=30,width=28,justify=RIGHT)
txtDisplay.grid(row=0,column=0, columnspan=4, pady=1)
txtDisplay.insert(0,"0")
 
numberpad = "123456789"
i=0
btn = []
for j in range(2,5):
    for k in range(3):
        btn.append(Button(calc, width=6, height=2,
                          bg='black',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.numberInput(x)
        i+=1
       
btnClear = Button(calc, text=chr(67),width=6,
                  height=2,bg='light blue',
                  font=('Helvetica',20,'bold')
                  ,bd=4, command=added_value.clearScreen
                 ).grid(row=1, column= 0, pady = 1)
 
btnAllClear = Button(calc, text=chr(67)+chr(69),
                     width=6, height=2,
                     bg='light blue',
                     font=('Helvetica',20,'bold'),
                     bd=4,
                     command=added_value.clearAllEntry
                    ).grid(row=1, column= 1, pady = 1)
 
btnsq = Button(calc, text="\u221A",width=6, height=2,
               bg='light blue', 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='light blue',
                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='light blue',
                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='light blue',
                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='light blue',
                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='black',fg='white',
                 font=('Helvetica',20,'bold'),
                 bd=4,command=lambda:added_value.numberInput(0)
                 ).grid(row=5, column= 0, pady = 1)
 
btnDot = Button(calc, text=".",width=6,
                height=2,bg='light blue',
                font=('Helvetica',20,'bold'),
                bd=4,command=lambda:added_value.numberInput(".")
                ).grid(row=5, column= 1, pady = 1)
btnPM = Button(calc, text=chr(177),width=6,
               height=2,bg='light blue', 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='light blue',
                   font=('Helvetica',20,'bold'),
                   bd=4,command=added_value.totalSum
                  ).grid(row=5, column= 3, pady = 1)
# ROW 1 :
btnPi = Button(calc, text="pi",width=6,
               height=2,bg='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',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='black',fg='white',justify=CENTER)
 
lblDisplay.grid(row=0, column= 4,columnspan=4)
 
def isExit():
    isExit = tkinter.messagebox.askyesno("Scientific Calculator",
                                        "Do you want to exit?")
    if isExit>0:
        root.destroy()
        return
 
def Scientific():
    root.resizable(width=False, height=False)
    root.geometry("945x568+0+0")
 
 
def Standard():
    root.resizable(width=False, height=False)
    root.geometry("480x568+0+0")
 
menubar = Menu(calc)
 
# MenuBar1 :
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 = isExit)
 
# MenuBar2 :
editmenu = Menu(menubar, tearoff = 0)
menubar.add_cascade(label = 'Edit', menu = editmenu)
editmenu.add_command(label = "Cut")
editmenu.add_command(label = "Copy")
editmenu.add_separator()
editmenu.add_command(label = "Paste")
 
root.config(menu=menubar)
 
root.mainloop()

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