为什么我会收到这个 TypeError: () got an unexpected keyword argument 错误？

Question

出于某种原因，我试图将 tkinter 图形添加到我的一小部分代码中，并希望在窗口上显示输出（计算总和）。我是如何使此代码正常工作的，请帮忙！

我的代码：

import tkinter as tk
from tkinter import *

window = tk.Tk()
window.geometry('400x600')
window.resizable(0, 0)
window.title("HACKER-simple interest setup")

# define entry variables
n1 = StringVar()
n2 = StringVar()
n3 = StringVar()


def simple_interest(*x):
    global principal, time
    principal = float(principal.get())
    time = float(time.get())
    interest_rate = float(ir.get())

    # simple interest calculating engine
    simple_interest(Simple_Interest=principal * (interest_rate / 100) * time)

    Output = Text(window, width=25, bg="light cyan")
    Output.grid(column=0, row=4)
    Output.place(x=150, y=300)
    Output.insert(END, "Simple_Interest:", simple_interest)


lbl = Label(window, text="Principal:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=45, y=125)

lbl = Label(window, text="Time:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=70, y=150)

lbl = Label(window, text="Interest rate:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=12, y=170)

principal = tk.Entry(window, textvariable=n1, width=40)
principal.grid(column=0, row=4)
principal.place(x=130, y=130)

time = tk.Entry(window, textvariable=n2, width=40)
time.grid(column=0, row=4)
time.place(x=130, y=150)

ir = tk.Entry(window, textvariable=n3, width=40)
ir.grid(column=0, row=4)
ir.place(x=130, y=170)

btn = Button(window, text="Calculate", bg="red", fg="white", command=simple_interest)
btn.grid(column=0, row=5)
btn.place(x=220, y=200)

window.mainloop()

出现错误：

C:\Users\Anmol\AppData\Local\Programs\Python\Python38\python.exe "D:/Downloads/si test.py"
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Anmol\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1892, in __call__
    return self.func(*args)
  File "D:/Downloads/si test.py", line 22, in simple_interest
    simple_interest(Simple_Interest=principal * (interest_rate / 100) * time)
TypeError: simple_interest() got an unexpected keyword argument 'Simple_Interest'

Answer 1

更改第 22 行 simple_interest(Simple_Interest=principal * (interest_rate / 100) * time) 到simple_interest=principal * (interest_rate / 100) * time

将第 27 行 Output.insert(END, "Simple_Interest:", simple_interest) 更改为 Output.insert(END, "Simple_Interest:" + str(simple_interest))

我是如何解决的？

我将单利分配给可变单利

对于输出，它只是将“简单兴趣”打印为字符串，所以我用结果替换了它

Answer 2

我认为您可以在第 22 行使用 Simple_Interest=principal * (interest_rate / 100) * time。
您应该使用第 17-19 行中的“if”语句

import tkinter as tk
from tkinter import *

window = tk.Tk()
window.geometry('400x600')
window.resizable(0, 0)
window.title("HACKER-simple interest setup")

# define entry variables
n1 = StringVar()
n2 = StringVar()
n3 = StringVar()


def simple_interest(*x):
    global principal, time
    principal = float(principal.get() if not isinstance(principal,float) else principal)
    time = float(time.get()) if not isinstance(time,float) else time
    interest_rate = float(ir.get()) if not isinstance(ir,float) else ir

    # simple interest calculating engine
    Simple_Interest=principal * (interest_rate / 100) * time

    Output = Text(window, width=25, bg="light cyan")
    Output.grid(column=0, row=4)
    Output.place(x=150, y=300)
    Output.insert(END, "Simple_Interest:\n"+str(Simple_Interest))


lbl = Label(window, text="Principal:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=45, y=125)

lbl = Label(window, text="Time:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=70, y=150)

lbl = Label(window, text="Interest rate:", font=("Aerial Bold Italic", 15))
lbl.grid(column=0, row=4)
lbl.place(x=12, y=170)

principal = tk.Entry(window, textvariable=n1, width=40)
principal.grid(column=0, row=4)
principal.place(x=130, y=130)

time = tk.Entry(window, textvariable=n2, width=40)
time.grid(column=0, row=4)
time.place(x=130, y=150)

ir = tk.Entry(window, textvariable=n3, width=40)
ir.grid(column=0, row=4)
ir.place(x=130, y=170)

btn = Button(window, text="Calculate", bg="red", fg="white", command=simple_interest)
btn.grid(column=0, row=5)
btn.place(x=220, y=200)

window.mainloop()

成功了！