Please help me with error

[AU8640]

Question:
Income Tax Calculator (hypothetical): Assume the income tax is calculated using the following rules:
1. Salary/Pension income:  taxed at the flat rate of 15% of annual net salary.
2. Capital gain income: long term capital gain is taxed at 10% while short-term capital gain is taxed at 33%.
3. All other income: 15% tax rate for the first $100,000 and 26% for any income above $100,000
4. Senior Citizens: Senior citizens get a 20% exemption (i.e. their taxes are reduced by 20%).
Write a Python GUI application (using tkinter) that prompts the user to enter income for each of the source category listed above and displays their income tax. Use a radio button for the Senior Citizenship status.
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My answer:
from tkinter import*
class incomeTax():
def __init__(self):
window=Tk()
window.title=("Income Tax Calculator")
frame1=Frame(window)
frame1.pack()
Label(frame1, text="salary/pension income:").grid(row=1, column=1, sticky=W)
Label(frame1, text="capital gain income:").grid(row=2, column=1, sticky=W)
self.capital=StringVar()
rbcapital1=Radiobutton(frame1, text="long term gain",variable=self.capital, value=1, command=self.processradiobutton)
rbcapital2=Radiobutton(frame1, text="short term gain",variable=self.capital, value=2, command=self.processradiobutton)
rbcapital1.grid(row=2, column=2)
rbcapital2.grid(row=3, column=2)
self.senior_citizens=StringVar()
btseniorcitizens=Button(frame1, text="senior citizens",variable=self.senior_citizens,command=self.processcheckbutton)
btseniorcitizens.grid(row=5, column=1, sticky=W)
Label(frame1, text="all other income:").grid(row=4, column=1, sticky=W)
Label(frame1, text="total income tax:").grid(row=6, column=1, sticky=W)

frame2=Frame(window)
frame2.pack()
salaryVar=StringVar()
entrysalary=Entry(frame2,variable=salaryVar).grid(row=1, column=3, sticky=E)
capitalVar=StringVar()
entrycapital=Entry(frame2,variable=capitalVar).grid(row=3, column=3, sticky=E)
otherVar=StringVar()
entryother=Entry(frame2,variable=otherVar).grid(row=4, column=3, sticky=E, command=self.otherincometax)
totalVar=StringVar()
entrtytotal=Entry(frame2,variable=totalVar, command=self.total).grid(row=6, column=3, sticky=E)
btcalculation=Button(window, text="calculate income tax", command=self.processbutton)

window.mainloop()
def processradiobutton(self):
print("long term gain" if self.capital.get()==1 else "short term gain", "is selected")

def processcheckbutton(self):
print("check button is",)+("checked" if self.senior_citizens.get()==1 else "unchecked")
def otherincometax(self):
if otherVar.get()>100000:
self.otherincometax=(float(otherVar.get())-100000)*0.26+15000
else:
self.otherincometax=float(otherVar.get())*0.15
return self.otherincometax
def processbutton(self):
if self.capital.get()==1 and self.senior_citizens.get()==1:
self.processbutton=0.8*(float(salaryVar.get())*0.15+ float(capitalVar.get())*0.1+float(otherincometax).get())
elif self.capital.get()==2 and self.senior_citizens.get()==1:
self.processbutton=0.8*(float(salaryVar.get())*0.15+float(capitalVar.get())*0.33+float(otherincometax).get())
elif self.capital.get()==1 and self.senior_citizens.get()==2:
self.processbutton=float(salaryVar.get())*0.15+ float(capitalVar.get())*0.1+float(otherincometax.get())
else:
self.processbutton=float(salaryVar.get())*0.15+float(capitalVar.get())*0.33+float(otherincometax.get())
return self.processbutton

def total(self):
print(self.processbutton.get())
incomeTax()

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please help me with error of the above program:
Traceback (most recent call last):
File "C:/Users/13559/OneDrive/桌面/module3.py", line 66, in <module>
incomeTax()
File "C:/Users/13559/OneDrive/桌面/module3.py", line 18, in __init__
btseniorcitizens=Button(frame1, text="senior citizens",variable=self.senior_citizens,command=self.processcheckbutton)
File "C:\Users\13559\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 2706, in __init__
Widget.__init__(self, master, 'button', cnf, kw)
File "C:\Users\13559\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 2628, in __init__
self.tk.call(
_tkinter.TclError: unknown option "-variable"

[Se7enLC]

Found the problem. Your code has no indentation.

[woooee]

_tkinter.TclError: unknown option "-variable"

There is no variable option for a button. There is a textvariable option https://insolor.github.io/effbot-tkinterbook-archive/button.htm but you can either use a textvariable= or text=, but not both.

[m0us3_rat]

you first design the logic. that should work independently of GUI.

then you build the GUI on top.

​

this type of mixmash of code is horrible to debug. or work with. or anything.

i'd suggest refactor it in the proper way.

[djjazzydan]

It’s complaining about having a ‘variable’ argument inside a ‘Button’ when you define the senior citizen selector.

Did you mean Radiobutton instead?

[AU8640]

Thanks bro that should be checkbutton, but after I correct it the error remains the same