Create kalkulator.py

kalkulator.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+#  običan kalulator.py
+#  
+#  Copyright 2024 MrBrok <[email protected]>
+#  
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#  
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#  
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+#  MA 02110-1301, USA.
+
+# MrBrok for Brok-Hak-Lab
+# kontakt <[email protected]>
+# 02.02.2024. Serbia
+
+
+import tkinter as tk
+
+root = tk.Tk()  # Prozor glavnog menija
+root.title("Običan kalulator͏͏")
+e = tk.Entry(root,
+             width=35,
+             bg='#f0ffff',
+             fg='black',
+             borderwidth=5,
+             justify='right',
+             font='Calibri 15')
+e.grid(row=0, column=0, columnspan=3, padx=12, pady=12)
+
+
+def buttonClick(num):  # Funkcija za klikove
+    temp = e.get(
+    )  # Privremena promenljiva za čuvanje trenutnog unosa na ekranu
+    e.delete(0, tk.END)
+    e.insert(0, temp + num)  # Ubacivanje ulaznog broja
+
+
+def buttonClear():  # Funkcija za čišćenje
+    e.delete(0, tk.END)
+
+
+def buttonGet(
+        oper
+):  # Funkcija za čuvanje prvog unosa i štampanje '+, -, /, *'
+    global num1, math  # Globalna promenljiva num1 i matematika za upotrebu u funkciji buttonEkual()
+    num1 = e.get()  # Dobijanje prvog broja
+    math = oper
+    e.insert(tk.END, math)
+    try:
+        num1 = float(num1)
+    except ValueError:
+        buttonClear()
+
+
+def buttonEqual():
+    inp = e.get()
+    num2 = float(inp[inp.index(math) + 1:])  # Dobijanje drugog broja
+    e.delete(0, tk.END)
+    if math == '+':  # Sabiranje
+        e.insert(0, str(num1 + num2))
+    elif math == '-':  # Oduzimanje
+        e.insert(0, str(num1 - num2))
+    elif math == 'x':  # Množenje
+        e.insert(0, str(num1 * num2))
+    elif math == '/':  # Deljenje
+        try:
+            e.insert(0, str(num1 / num2))
+        except ZeroDivisionError:
+            # U slučaju da u imeniocu postoji nula, odgovor je nedefinisan
+            e.insert(0, 'Undefined')
+
+
+# Definisanje dugmića:
+b1 = tk.Button(root,
+               text='1',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('1'),
+               font='Calibri 12')
+b2 = tk.Button(root,
+               text='2',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('2'),
+               font='Calibri 12')
+b3 = tk.Button(root,
+               text='3',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('3'),
+               font='Calibri 12')
+b4 = tk.Button(root,
+               text='4',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('4'),
+               font='Calibri 12')
+b5 = tk.Button(root,
+               text='5',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('5'),
+               font='Calibri 12')
+b6 = tk.Button(root,
+               text='6',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('6'),
+               font='Calibri 12')
+b7 = tk.Button(root,
+               text='7',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('7'),
+               font='Calibri 12')
+b8 = tk.Button(root,
+               text='8',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('8'),
+               font='Calibri 12')
+b9 = tk.Button(root,
+               text='9',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('9'),
+               font='Calibri 12')
+b0 = tk.Button(root,
+               text='0',
+               padx=40,
+               pady=10,
+               command=lambda: buttonClick('0'),
+               font='Calibri 12')
+bdot = tk.Button(root,
+                 text='.',
+                 padx=41,
+                 pady=10,
+                 command=lambda: buttonClick('.'),
+                 font='Calibri 12')
+
+badd = tk.Button(root,
+                 text='+',
+                 padx=29,
+                 pady=10,
+                 command=lambda: buttonGet('+'),
+                 font='Calibri 12')
+bsub = tk.Button(root,
+                 text='-',
+                 padx=30,
+                 pady=10,
+                 command=lambda: buttonGet('-'),
+                 font='Calibri 12')
+bmul = tk.Button(root,
+                 text='x',
+                 padx=30,
+                 pady=10,
+                 command=lambda: buttonGet('x'),
+                 font='Calibri 12')
+bdiv = tk.Button(root,
+                 text='/',
+                 padx=30.5,
+                 pady=10,
+                 command=lambda: buttonGet('/'),
+                 font='Calibri 12')
+
+bclear = tk.Button(root,
+                   text='PONIŠTI SVE',
+                   padx=20,
+                   pady=10,
+                   command=buttonClear,
+                   font='Calibri 12')
+bequal = tk.Button(root,
+                   text='=',
+                   padx=39,
+                   pady=10,
+                   command=buttonEqual,
+                   font='Calibri 12')
+
+# Postavljanje dugmića na ekran u redove i kolone:
+b1.grid(row=3, column=0)
+b2.grid(row=3, column=1)
+b3.grid(row=3, column=2)
+badd.grid(row=3, column=3)
+
+b4.grid(row=2, column=0)
+b5.grid(row=2, column=1)
+b6.grid(row=2, column=2)
+bmul.grid(row=2, column=3)
+
+b7.grid(row=1, column=0)
+b8.grid(row=1, column=1)
+b9.grid(row=1, column=2)
+bdiv.grid(row=1, column=3)
+
+b0.grid(row=4, column=0)
+bdot.grid(row=4, column=1)
+bequal.grid(row=4, column=2)
+bsub.grid(row=4, column=3)
+
+bclear.grid(row=0, column=3)
+
+# Otvaranje prozora:
+root.mainloop()