import customtkinter
from tkinter import END
from tkinter import messagebox


#Function part
def calculate():
    try:   
        expression = entryField.get()  
        result = eval(expression) 
        ans = round(result, 3)  
        entryField.delete(0, END)  
        entryField.insert(0, ans)  

    except SyntaxError:  
        messagebox.showerror('Error', 'Invalid expression')  
    except ZeroDivisionError:
        messagebox.showerror('Error', 'Cannot divide by zero')

def click(number):
      entryField.insert(END, number)

def clear():
    entryField.delete(0,END)
     #  eND FUNCTION Part

   #  #GUI part of python
root=customtkinter.CTk()
root.title('Modern Calculator')
root.geometry('300x300')
root.config(bg='black')
#end GUI part

#empliment on board of calculator
entryField=customtkinter.CTkEntry(root,font=('arial',20,'bold'), text_color='white',border_color='white',border_width=1,
                                  width=280,height=50,bg_color='black')
entryField.grid(row=0, column=0, padx=10, pady=10, columnspan=4,)


b7 = customtkinter.CTkButton(root, text='7',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',border_width=1,command=lambda:click('7'))
b7.grid(row=1, column=0)

b8 = customtkinter.CTkButton(root, text='8',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',border_width=1,command=lambda:click('8'))
b8.grid(row=1, column=1)

b9 = customtkinter.CTkButton(root, text='9',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('9'))
b9.grid(row=1, column=2)

bplus = customtkinter.CTkButton(root, text='+',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2', fg_color='gray',hover_color='white',command=lambda:click('+'))
bplus.grid(row=1, column=3)




b4 = customtkinter.CTkButton(root, text='4',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',border_width=1,command=lambda:click('4'))
b4.grid(row=2, column=0,pady=10)

b5 = customtkinter.CTkButton(root, text='5',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('5'))
b5.grid(row=2, column=1)

b6 = customtkinter.CTkButton(root, text='6',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('6'))
b6.grid(row=2, column=2)

bminus= customtkinter.CTkButton(root, text='-',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2', fg_color='gray',hover_color='white',command=lambda:click('-'))
bminus.grid(row=2, column=3)




b1 = customtkinter.CTkButton(root, text='1',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',border_width=1,command=lambda:click('1'))
b1.grid(row=3, column=0)

b2 = customtkinter.CTkButton(root, text='2',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('2'))
b2.grid(row=3, column=1)

b3 = customtkinter.CTkButton(root, text='3',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('3'))
b3.grid(row=3, column=2)

bmulti= customtkinter.CTkButton(root, text='*',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2', fg_color='gray',hover_color='white',command=lambda:click('*'))
bmulti.grid(row=3, column=3)




bdot = customtkinter.CTkButton(root, text='.',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',border_width=1,command=lambda:click('.'))
bdot.grid(row=4, column=0,pady=10)

b0 = customtkinter.CTkButton(root, text='0',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('0'))
b0.grid(row=4, column=1)

bdiv = customtkinter.CTkButton(root, text='/',font=('arial',20,'bold'),width=60,bg_color='black',cursor='hand2',command=lambda:click('/'))
bdiv.grid(row=4, column=2)

bclear= customtkinter.CTkButton(root, text='C',font=('arial',20,'bold'),width=60,bg_color='black',
                                cursor='hand2', fg_color='red',hover_color='white',command=clear)
bclear.grid(row=4, column=3, )



bequal= customtkinter.CTkButton(root, text='=',font=('arial',20,'bold'),width=280, height=50,bg_color='black',
                                cursor='hand2', fg_color='#000080',hover_color='gray',command=calculate)
bequal.grid(row=5, column=0,columnspan=4, )



root.mainloop()