Lesson #7

007. Finish Building A Simple Calculator App - Python Tkinter GUI Tutorial #7/calculator.py

@@ -0,0 +1,120 @@
+from tkinter import *
+
+root = Tk()
+root.title("Simple Calculator")
+
+e = Entry(root, width=35, borderwidth=5)
+e.grid(row=0, column=0, columnspan=3, padx=10, pady=10)
+
+# e.insert(0, "")
+
+
+def button_click(number):
+    # e.delete(0, END)
+    current = e.get()
+    e.delete(0, END)
+    e.insert(0, str(current) + str(number))
+
+
+def button_clear():
+    e.delete(0, END)
+
+
+def button_add():
+    first_number = e.get()
+    global f_num
+    global math
+    math = "addition"
+    f_num = int(first_number)
+    e.delete(0, END)
+
+
+def button_equal():
+    second_number = e.get()
+    e.delete(0, END)
+
+    if math == "addition":
+        e.insert(0, f_num + int(second_number))
+
+    if math == "subtraction":
+        e.insert(0, f_num - int(second_number))
+
+    if math == "multiplication":
+        e.insert(0, f_num * int(second_number))
+
+    if math == "division":
+        e.insert(0, f_num / int(second_number))
+
+
+def button_subtract():
+    first_number = e.get()
+    global f_num
+    global math
+    math = "subtraction"
+    f_num = int(first_number)
+    e.delete(0, END)
+
+
+def button_multiply():
+    first_number = e.get()
+    global f_num
+    global math
+    math = "multiplication"
+    f_num = int(first_number)
+    e.delete(0, END)
+
+
+def button_divide():
+    first_number = e.get()
+    global f_num
+    global math
+    math = "division"
+    f_num = int(first_number)
+    e.delete(0, END)
+
+
+# Define Buttons
+
+button_1 = Button(root, text="1", padx=40, pady=20, command=lambda: button_click(1))
+button_2 = Button(root, text="2", padx=40, pady=20, command=lambda: button_click(2))
+button_3 = Button(root, text="3", padx=40, pady=20, command=lambda: button_click(3))
+button_4 = Button(root, text="4", padx=40, pady=20, command=lambda: button_click(4))
+button_5 = Button(root, text="5", padx=40, pady=20, command=lambda: button_click(5))
+button_6 = Button(root, text="6", padx=40, pady=20, command=lambda: button_click(6))
+button_7 = Button(root, text="7", padx=40, pady=20, command=lambda: button_click(7))
+button_8 = Button(root, text="8", padx=40, pady=20, command=lambda: button_click(8))
+button_9 = Button(root, text="9", padx=40, pady=20, command=lambda: button_click(9))
+button_0 = Button(root, text="0", padx=40, pady=20, command=lambda: button_click(0))
+button_add = Button(root, text="+", padx=39, pady=20, command=button_add)
+button_equal = Button(root, text="=", padx=91, pady=20, command=button_equal)
+button_clear = Button(root, text="clear", padx=79, pady=20, command=button_clear)
+
+button_subtract = Button(root, text="-", padx=41, pady=20, command=button_subtract)
+button_multiply = Button(root, text="*", padx=40, pady=20, command=button_multiply)
+button_divide = Button(root, text="/", padx=41, pady=20, command=button_divide)
+
+# Put the buttons on the screen
+
+button_1.grid(row=3, column=0)
+button_2.grid(row=3, column=1)
+button_3.grid(row=3, column=2)
+
+button_4.grid(row=2, column=0)
+button_5.grid(row=2, column=1)
+button_6.grid(row=2, column=2)
+
+button_7.grid(row=1, column=0)
+button_8.grid(row=1, column=1)
+button_9.grid(row=1, column=2)
+
+button_0.grid(row=4, column=0)
+button_clear.grid(row=4, column=1, columnspan=2)
+button_add.grid(row=5, column=0)
+button_equal.grid(row=5, column=1, columnspan=2)
+
+button_subtract.grid(row=6, column=0)
+button_multiply.grid(row=6, column=1)
+button_divide.grid(row=6, column=2)
+
+
+root.mainloop()

readme.md

@@ -10,3 +10,4 @@
 * [Creating Input Fields With TKinter - Python Tkinter GUI Tutorial #4](https://www.youtube.com/watch?v=7A_csP9drJw&list=PLCC34OHNcOtoC6GglhF3ncJ5rLwQrLGnV&index=4&pp=iAQB)
 * [Build A Simple Calculator App - Python Tkinter GUI Tutorial #5](https://www.youtube.com/watch?v=F5PfbC5ld-Q&list=PLCC34OHNcOtoC6GglhF3ncJ5rLwQrLGnV)
 * [Continue Building A Simple Calculator App - Python Tkinter GUI Tutorial #6](https://www.youtube.com/watch?v=XhCfsuMyhXo&list=PLCC34OHNcOtoC6GglhF3ncJ5rLwQrLGnV)
+* [Finish Building A Simple Calculator App - Python Tkinter GUI Tutorial #7](https://www.youtube.com/watch?v=oq3lJdhnPp8&list=PLCC34OHNcOtoC6GglhF3ncJ5rLwQrLGnV)