# Divyanshu Lohani: https://github.com/DivyanshuLohani

from tkinter import *

import tkinter.ttk

root = Tk()

root.title("Calculator - Divyanshu")

root.resizable(False, False)

button_texts = "C-%÷789×456-123+0.d="

first_col = 'C_%÷'

second_col = '789×'

third_col = '456-'

fourth_col = '123+'

fifth_col = '0.d='

first_bg_color_set = ["#2c3338", "#2c3338", "#2c3338", "#725fcc"]

second_bg_color_set = ["#2c3338", "#2c3338", "#2c3338", "#725fcc"]

third_bg_color_set = ["#2c3338", "#2c3338", "#2c3338", "#725fcc"]

fourth_bg_color_set = ["#2c3338", "#2c3338", "#2c3338", "#725fcc"]

fifth_bg_color_set = ["#2c3338", "#2c3338", "#2c3338", "#fac40a"]

main_ans = ""

display_label_value = ""

history_label_value = ""

history_label = Label(root, text=history_label_value, height=2, bg="white", font="lucida 20", anchor='e')

history_label.pack(fill=X)

display_label = Label(root, text=history_label_value, height=2, width=2, pady=5,bg="white", font="lucida 30 bold", anchor='e')

display_label.pack(fill=X)

Frame(root, height=1, bg='white').pack(fill=X)

ends_with_op = True

def click(event):

global display_label_value, history_label_value, main_ans, ends_with_op

btn_text = event.widget.cget('text')

# print(btn_text)

if btn_text == "C":

display_label_value = ""

history_label_value = ""

main_ans = ""

elif btn_text == "-":

if ends_with_op:

return

main_ans += display_label_value + "-"

history_label_value = main_ans

display_label_value = ""

ends_with_op = True

elif btn_text == "+":

if ends_with_op:

return

main_ans += display_label_value + "+"

history_label_value = main_ans

display_label_value = ""

ends_with_op = True

elif btn_text == "÷":

if ends_with_op:

return

main_ans += display_label_value + "/"

history_label_value = main_ans.replace("/", "÷")

display_label_value = ""

ends_with_op = True

elif btn_text == "×":

if ends_with_op:

return

main_ans += display_label_value + "*"

history_label_value = main_ans.replace("*", "×")

display_label_value = ""

ends_with_op = True

elif btn_text == "CE":

display_label_value = display_label_value[:-1]

elif btn_text == "%":

try:

percent = ''

if not percent == display_label_value:

percent += display_label_value

percent = percent + "/100"

percent = str(eval(percent))

display_label_value = percent

except:

pass

finally:

percent = ''

elif btn_text == "=":

main_ans += display_label_value

if display_label_value == main_ans: return

history_label_value += display_label_value

display_label_value = ""

try:

main_ans = str(eval(main_ans))

display_label_value = main_ans

main_ans = ''

except ZeroDivisionError as e:

display_label_value = "Cannot Devide By Zero"

main_ans = ''

except SyntaxError as e:

pass

elif btn_text == ".":

if display_label_value.find('.') == -1:

if display_label_value == "":

display_label_value = "0" + display_label_value + btn_text

else:

display_label_value += btn_text

elif btn_text == "+/-":

if display_label_value.startswith("-"):

display_label_value = display_label_value.replace("-", "")

else:

display_label_value = "-" + display_label_value

else:

display_label_value += btn_text

ends_with_op = False

display_label['text'] = display_label_value

history_label['text'] = history_label_value

# print(main_ans)

for row in range(5):

f1 = Frame(root, height=55)

# Setup the buttons

for column in range(4):

text = ""

if row == 0:

text = first_col

bg_color = first_bg_color_set

if row == 1:

text = second_col

bg_color = second_bg_color_set

if row == 2:

text = third_col

bg_color = third_bg_color_set

if row == 3:

text = fourth_col

bg_color = fourth_bg_color_set

if row == 4:

text = fifth_col

bg_color = fifth_bg_color_set

symbol = text[column]

# Make the respective symbols

if symbol == "_": symbol = "+/-"

elif symbol == "d": symbol = "CE"

fg_color = "#dddddd"

if row == 4 and column == 3:

fg_color = "black"

b1 = Button(f1, text=symbol, font="comic 20 bold", bg=bg_color[column], fg=fg_color, padx=30, width=2, height=2, )

b1.pack(side=LEFT)

b1.bind("<Button 1>", click)

f1.pack(fill=X)

root.mainloop()