Python/Tkinter -

Question

我正在开发一个应用来计算账单税，同时如果计算基数((receita1 * 32/100) + (receita2 * 8/100)) 的值大于60k，则计算盈余其中，(((receita1 * 32/100) + (receita2 * 8/100)) - 60000)，但是给出了以下错误：

v_result3.set(real(receita1 * 32 / 100) + (receita2 * 8 / 100))
TypeError: can only concatenate str (not "float") to str

这是完整的代码：

from tkinter import *

root = Tk()
root.geometry('350x350')

def real(my_value):
    a = '{:,.2f}'.format(float(my_value))
    b = a.replace(',', 'v')
    c = b.replace('.', ',')
    return c.replace('v', '.')

l_label = Label(root, text='Receita 1')
l_label.place(x=10, y=10)
e_entry = Entry(root)
e_entry.place(x=100, y=10)

l_label2 = Label(root, text='Receita 2')
l_label2.place(x=10, y=40)
e_entry2 = Entry(root)
e_entry2.place(x=100, y=40)

v_result = DoubleVar()
l_result = Label(root, textvariable=v_result)
l_result.place(x=10, y=70)
l_explic = Label(root, text='<-- receita1 x 32%')
l_explic.place(x=100, y=70)

v_result2 = DoubleVar()
l_result2 = Label(root, textvariable=v_result2)
l_result2.place(x=10, y=100)
l_explic2 = Label(root, text='<-- receita2 x 8%')
l_explic2.place(x=100, y=100)

v_result3 = DoubleVar()
l_result3 = Label(root, textvariable=v_result3)
l_result3.place(x=10, y=130)
l_explic3 = Label(root, text='<-- receita1 x 32% + receita2 x 8%')
l_explic3.place(x=100, y=130)

v_result4 = DoubleVar()
l_result4 = Label(root, textvariable=v_result4)
l_result4.place(x=10, y=160)
l_explic4 = Label(root, text='<-- result if')
l_explic4.place(x=100, y=160)


def calc():
    receita1 = int(e_entry.get())
    receita2 = int(e_entry2.get())

    v_result.set(real(receita1 * 32 / 100))
    v_result2.set(real(receita2 * 8 / 100))
    v_result3.set(real(receita1 * 32 / 100) + (receita2 * 8 / 100))

    if v_result3.get() > 60000:
        v_result4.set(real((receita1 * 32 / 100) + (receita2 * 8 / 100)) - 60000)
    elif v_result3.get() < 60000:
        v_result4.set(real(receita1 * 32 / 100) + (receita2 * 8 / 100))


    e_entry.delete(0, END)
    e_entry2.delete(0, END)


bt = Button(root, text='calc', command=calc)
bt.place(x=10, y=200)

root.mainloop()

Answer 1

您看到这个问题是因为您正在混合和匹配格式化为字符串和数字本身的数字。

最好将您的计算形成输入/计算/输出。 我还冒昧地使用Decimal数而不是普通整数，因为您似乎在与金钱打交道，并且在该领域中精度通常等同于。

from decimal import Decimal
from tkinter import *


root = Tk()
root.geometry("350x350")


l_label = Label(root, text="Receita 1")
l_label.place(x=10, y=10)
e_entry = Entry(root)
e_entry.place(x=100, y=10)

l_label2 = Label(root, text="Receita 2")
l_label2.place(x=10, y=40)
e_entry2 = Entry(root)
e_entry2.place(x=100, y=40)

v_result1 = StringVar()
l_result1 = Label(root, textvariable=v_result1)
l_result1.place(x=10, y=70)
l_explic1 = Label(root, text="<-- receita1 x 32%")
l_explic1.place(x=100, y=70)

v_result2 = StringVar()
l_result2 = Label(root, textvariable=v_result2)
l_result2.place(x=10, y=100)
l_explic2 = Label(root, text="<-- receita2 x 8%")
l_explic2.place(x=100, y=100)

v_result3 = StringVar()
l_result3 = Label(root, textvariable=v_result3)
l_result3.place(x=10, y=130)
l_explic3 = Label(root, text="<-- receita1 x 32% + receita2 x 8%")
l_explic3.place(x=100, y=130)

v_result4 = StringVar()
l_result4 = Label(root, textvariable=v_result4)
l_result4.place(x=10, y=160)
l_explic4 = Label(root, text="<-- result if")
l_explic4.place(x=100, y=160)


def real(my_value):
    return str(my_value.quantize(Decimal("0.02"))).replace(".", ",")


def calc():
    # Get inputs
    receita1 = Decimal(int(e_entry.get()))
    receita2 = Decimal(int(e_entry2.get()))
    # Compute
    result1 = receita1 * Decimal("0.32")
    result2 = receita2 * Decimal("0.08")
    result3 = receita1 + receita2
    if result3 > 60000:
        result4 = result3 - 60000
    else:
        result4 = result3

    # Output
    v_result1.set(real(result1))
    v_result2.set(real(result2))
    v_result3.set(real(result3))
    v_result4.set(real(result4))
    e_entry.delete(0, END)
    e_entry2.delete(0, END)


bt = Button(root, text="calc", command=calc)
bt.place(x=10, y=200)

root.mainloop()