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Calculator.py
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Calculator.py
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from tkinter import *;
from tkinter import messagebox;
#Check weather the input string is a number or not
def is_number(s):
if(s != ''):
if (s.replace('.', '', 1).isdigit()):
return True
if (s.isdigit()):
return True;
if s[0] in ['-', '+', '.', '0', ' ']:
if (s[1] == '.'):
if (s[2:].isdigit()):
return True
if (s[1] == '0' and s[2] == '.'):
if (s[3:].isdigit()):
return True
if s[1:].isdigit():
return True;
return False;
def casting(num):
if('.' in num):
return float(num);
else:
return int(num)
#Plus sign function
def actionPlus():
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='red', bg='#9ed8ee')
Showtemplabel.insert(0, 'Summation');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
ans = "0";
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
num1 = Numberentry1.get();
num2 = Numberentry2.get();
if(is_number(num1) == True and is_number(num2) == True and num1 != ' ' and num2 != ' '):
num1 = casting(num1);
num2 = casting(num2);
ans = str(num1 + num2);
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='red', bg='#9ed8ee')
Showtemplabel.insert(0, 'Summation');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
else:
messagebox.showerror("Error", "Enter a Valid number\ne.g. 123, 0.123, .123, -0.123, 123.456")
#Minus sign function
def actionMinus():
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='green', bg='#ece7e2')
Showtemplabel.insert(0, 'Subtraction');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
ans = "0";
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
num1 = Numberentry1.get();
num2 = Numberentry2.get();
if(is_number(num1)==True and is_number(num2)==True):
num1 = casting(num1);
num2 = casting(num2);
ans = str(num1 - num2);
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='green', bg='#ece7e2')
Showtemplabel.insert(0, 'Subtraction');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
else:
messagebox.showerror("Error", "Enter a Valid number\ne.g. 123, 0.123, .123, -0.123, 123.456")
#Multiplication sign function
def actionMul():
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='blue', bg='#cacba9')
Showtemplabel.insert(0, 'Multiplication');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
ans = "0"
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
num1 = Numberentry1.get();
num2 = Numberentry2.get();
if(is_number(num1)==True and is_number(num2)==True):
num1 = casting(num1);
num2 = casting(num2);
ans = str(num1 * num2);
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='blue', bg='#cacba9')
Showtemplabel.insert(0, 'Multiplication');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
else:
messagebox.showerror("Error", "Enter a Valid number\ne.g. 123, 0.123, .123, -0.123, 123.456")
#Division sign function
def actionDiv():
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='yellow', bg='#8dad96')
Showtemplabel.insert(0, 'Division');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
ans = "0"
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
num1 = Numberentry1.get();
num2 = Numberentry2.get();
if(is_number(num1)==True and is_number(num2)==True):
num1 = casting(num1);
num2 = casting(num2);
ans = str(num1 / num2);
Showtemplabel.delete(0, END);
Showlabel.delete(0, END)
Showtemplabel.config(fg='yellow', bg='#8dad96')
Showtemplabel.insert(0, 'Division');
Showtemplabel.place(relx=0.5, rely=0.5, anchor='center')
Showlabel.insert(0, ans);
Showlabel.place(relx=0.5, rely=0.6, anchor='center')
else:
messagebox.showerror("Error", "Enter a Valid number\ne.g. 123, 0.123, .123, -0.123, 123.456")
root = Tk();
root.title('My First Python Calculator');
root.geometry('380x300+200+250');
Titlelabel = Label(root, fg = 'green' , font = 'none 10 bold underline' ,text = 'Python Calculator', compound = CENTER)
Titlelabel.place(relx=0.5, rely=0.1, anchor='center')
Showlabel = Entry(root);
Showtemplabel = Entry(root);
Numberentry1 = Entry(root);
Numberentry2 = Entry(root);
Numberentry1.place(relx=0.5, rely=0.3, anchor='center')
Numberentry2.place(relx=0.5, rely=0.4, anchor='center')
plusbutton = Button(root, text="+", width = 5, command = actionPlus);
plusbutton.place(relx=0.1, rely=0.7)
minusbutton = Button(root, text="-", width = 5, command = actionMinus);
minusbutton.place(relx=0.3, rely=0.7)
mulbutton = Button(root, text="*", width = 5, command = actionMul);
mulbutton.place(relx=0.5, rely=0.7)
divbutton = Button(root, text="/", width = 5, command = actionDiv);
divbutton.place(relx=0.7, rely=0.7)
root.resizable(False, False);
root.mainloop();