Welcome folks today in this folks we will be building a advanced scientific calculator in python using tkinter. All the full source code of the application will be shown below.

Get Started

In order to get started you need to install the following libraries shown below

pip install tkinter

pip install math

After installing these libraries make an app.py file and copy paste the following code

app.py

from tkinter import Tk
from tkinter import StringVar,Entry,Button
from math import pi,e,sin,cos,tan,log,log10,ceil,degrees,radians,exp,asin,acos,floor


class calculator:
    def __init__(self):
        window=Tk()
        window.title('Scientific Calculator')
        window.configure(background="white")
        self.string=StringVar()
        entry=Entry(window,textvariable=self.string)
        entry.grid(row=0,column=0,columnspan=6)
        entry.configure(background="white")
        entry.focus()
        
        values=["7","8","9","/","%","clear","AC",
                "4","5","6","*","(",")","**",
                "1","2","3","-","=",",","0",".","min","+","sin","asin","cos","acos","tan()",
                "pow","log10","max","abs","floor","pi","e","log","ceil","degrees","radians"]
        text=1
        i=0
        row=1
        col=0
        for txt in values:
            padx=10
            pady=10
            if(i==7):
                row=2
                col=0
            if(i==14):
                row=3
                col=0
            if(i==19):
                row=4
                col=0
            if(i==26):
                row=5
                col=0
            if(i==33):
                row=6
                col=0
            if(txt=='='):
                btn=Button(window,height=2,width=4,padx=70,pady=pady,text=txt,command=lambda txt=txt:self.equals())
                btn.grid(row=row,column=col,columnspan=3,padx=2,pady=2)
                btn.configure(background="yellow")

            elif(txt=='clear'):
                btn=Button(window,height=2,width=4,padx=padx,pady=pady, text=txt ,command=lambda txt=txt:self.delete())
                btn.grid(row=row,column=col,padx=1,pady=1)
                btn.configure(background="grey")
            elif(txt=='AC'):
                btn=Button(window,height=2,width=4,padx=padx,pady=pady,text=txt,command=lambda txt=txt:self.clearall())
                btn.grid(row=row,column=col,padx=1,pady=1)
                btn.configure(background="red")
            else:
                btn=Button(window,height=2,width=4,padx=padx,pady=pady,text=txt ,command=lambda txt=txt:self.addChar(txt))
                btn.grid(row=row,column=col,padx=1,pady=1)
                btn.configure(background="cyan")

            col=col+1
            i=i+1
        window.mainloop()
        

    def clearall(self):
        self.string.set("")

    def equals(self):
        result=""

        try:
            result=eval(self.string.get())
            self.string.set(result)
        except:
            result="INVALID INPUT"
        self.string.set(result)
        
    def addChar(self,char):
        self.string.set(self.string.get()+(str(char)))
        
    def delete(self):
        self.string.set(self.string.get()[0:-1])
           
calculator()

So now if you execute this python script app.py by typing the below command shown below

python app.py

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