Как вывести "Error" при делении на 0 в калькуляторе?

Question

Использую библиотеку tkinter, в консольном калькуляторе знаю как выводить нужный текст при делении на 0, а здесь не могу понять что нужно написать, что-бы в окне ввода писало "Error!"

from tkinter import *
window = Tk()
window.title('Калькулятор')
window.resizable(width=False, height=False)
window.geometry('270x260+200+200')


entry = Entry(window, bg='gray', fg='white', width=19, font=('Time new romance', 18))
entry.place(x=10,y=10 )


def input_into_entry(sumbol):
    entry.insert(END, sumbol)

def clear():
    entry.delete(0, END)

def count_result():
    text = entry.get()
    result=0
    if "+" in text:
        split_text = text.split("+")
        first = split_text[0]
        second = split_text[1]
        result = float(first) + float(second)
    if "-" in text:
        split_text = text.split("-")
        first = split_text[0]
        second = split_text[1]
        result = float(first) - float(second)
    if "*" in text:
        split_text = text.split("*")
        first = split_text[0]
        second = split_text[1]
        result = float(first) * float(second)
    if "/" in text:
        split_text = text.split("/")
        first = split_text[0]
        second = split_text[1]
        result = float(first) / float(second)

    clear()
    entry.insert(0, result)

Answer 1

Если я правильно Вас понял, вам нужно вместо ошибки выводить "Error!". Воспользуйтесь try:

try:
    result = float(first) / float(second)
except:
    print("Error!")

Answer 2

оберни в try-except

try:
    ...
except ZeroDivisionError:
    clear()
    entry.insert(0, "Деление на 0!")

вот тебе еще "не простенький" калькулятор

from tkinter import *
import math

window = Tk()
window.title('Калькулятор')
window.resizable(width=False, height=False)
window.geometry('700x600')

entry = Entry(window, bg='gray', fg='white', width=20, font=('Arial', 24), justify='right')
entry.place(x=20, y=20, width=650, height=70)

def input_into_entry(symbol):
    entry.insert(END, symbol)

def clear():
    entry.delete(0, END)

def count_result():
    text = entry.get()
    try:
        result = eval(text)
        clear()
        entry.insert(0, str(result))
    except ZeroDivisionError:
        clear()
        entry.insert(0, "Деление на 0!")
    except SyntaxError:
        clear()
        entry.insert(0, "Ошибка ввода!")
    except:
        clear()
        entry.insert(0, "Ошибка!")


buttons = [
    'C', '(', ')', '/', 'sin', 'cos',
    '7', '8', '9', '*', 'sqrt', 'log',
    '4', '5', '6', '-', 'pi', 'e',
    '1', '2', '3', '+', '^', 'x!',
    '0', '.', '=', '', '', ''
]

x = 20
y = 120
button_width = 100
button_height = 60

for button in buttons:
    if button == '=':
        Button(window, text=button, command=count_result, font=('Arial', 18), bg='orange').place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'C':
        Button(window, text=button, command=clear, font=('Arial', 18), bg='lightgray').place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == '^':
        Button(window, text=button, command=lambda b='**': input_into_entry(b), font=('Arial', 18)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'sin':
        Button(window, text=button, command=lambda: input_into_entry('math.sin('), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'cos':
        Button(window, text=button, command=lambda: input_into_entry('math.cos('), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'sqrt':
        Button(window, text=button, command=lambda: input_into_entry('math.sqrt('), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'log':
        Button(window, text=button, command=lambda: input_into_entry('math.log('), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'pi':
        Button(window, text=button, command=lambda: input_into_entry('math.pi'), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'e':
        Button(window, text=button, command=lambda: input_into_entry('math.e'), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button == 'x!':
        Button(window, text=button, command=lambda: input_into_entry('math.factorial('), font=('Arial', 16)).place(
            x=x, y=y, width=button_width, height=button_height)
    elif button:
        Button(window, text=button, command=lambda b=button: input_into_entry(b), font=('Arial', 18)).place(
            x=x, y=y, width=button_width, height=button_height)

    x += 110
    if x > 600:
        x = 20
        y += 70

window.mainloop()

БЛОГ НА HUSL

Как вывести "Error" при делении на 0 в калькуляторе?

Ответы (2 шт):