Python / Tkinter-

Posted 2021-03-19

我正在开发一个用于计算帐单税的应用程序，同时，如果计算基础的值（（receita1 * 32/100）+（receita2 * 8/100））的值大于60k，它将计算的盈余，（（（（receita1 * 32/100）+（receita2 * 8/100））-60000），但是出现以下错误：

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

这里是完整的代码：

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()

答案

您正在看到此问题，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。我也很自由地使用Decimal数字而不是普通整数，因为您似乎正在处理金钱，并且精度通常等同于该域。

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()