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Incomplete format error

726297Oct 6 2009 — edited Oct 6 2009
EDIT: never mind I figured out the problem~ it was an extra ":" inside the __main__... -.-!!
But new problem! If I run the program and input the answers, it returns an error:
Traceback (most recent call last):
File "<string>", line 1, in <string>
ValueError: incomplete format
Does anyone know what this means?

Original question

Hi everyone, I'm a total beginner to Python, currently studying it in university.
I'm almost done this assignment that asks me to create a program that accepts input from user on a few questions, then based on the answers calculate his or her total tax credit.
Here is the full code:
(Is it just me or is there no
 tags on a programming forum...???)

======================
#Tax credit calculator functions

def dependant_amount(d_net_income):
    '''Return the deductible amount to be entered on line 5816 of the Ontario
    Tax form, based on float d_net_income, the dependant's net income.'''

    line_3 = max(0, 8108.00 - d_net_income)
    return min(7371.0, line_3)

def medical_amount(d_net_income, med_expenses):
    '''Return the amount to be entered on line 5872: "Allowable medical
    expenses", of the Ontario Tax Form, based on float d_net_income,
    representing the taxpayer's dependant's net income, and float med_expenses,
    representing his or her medical expenses.'''

    line_2 = min(d_net_income * 0.03, 1965.0)
    return medical_expenses - line_2

def age_amount(net_income):
    '''Return the amount to be entered on line 5808: "Age amount", of the
    Ontario Tax Form, based on float net_income, the taxpayer's net income. This
    credit applies only to persons born in 1943 or earlier.'''

    line_4 = max(0, net_income - 31554.0)
    line_6 = line_4 * 0.15
    age = max(0, 4239.0 - line_6)
    return age

def infirm(d_net_income):
    '''Return the amount to be entered on line 5820: "Amount for infirm
    dependants age 18 or older", of the Ontario Tax Form, based on float 
    d_net_income, representing the taxpayer's dependant's net income.'''

    if 9908.0 - d_net_income > 4091.0:
        line_3 = 4091.0
    else:
        line_3 = max(0, 9908.0 - d_net_income)
    return line_3

def political_amount(contribution):
    '''Return the amount to be entered on line 24: "Ontario political
    contribution tax credit", of the Ontario Tax Form, based on float
    contributions, representing the taxpayer's political contributions.'''

    if contribution <= 336.0:
        line_7 = contribution * 0.75
    elif 336.0 < contribution <= 1120.0:
        line_7 = ((contribution - 336.0) * 0.5) + 252.0
    elif 1120.0 < contribution <= 2548.0:
        line_7 = ((contribution - 1120.0) * 0.3333) + 644.0
    else:
        line_7 = 1120.0
    return line_7

#Tax credit calculator

if __name__ == "__main__:":
    
    #User-defined values of parameters of the functions defined earlier
    
    net_income = float(raw_input("Please enter your net income: "))
    d_net_income = float(raw_input("Please enter your dependant's net"
                                   " income: "))
    med_expenses = float(raw_input("Please enter your dependant's medical"
                                   " expenses: "))
    infirmity = raw_input("Is your dependant infirm (please enter 'yes' or"
                          "'no'): ")
    year_of_birth = float(raw_input("Please enter the year you were born (all"
                                    " four digits): "))
    contribution = float(raw_input("Please enter the amount of your political"
                                   " contributions: "))
    
    if infirmity == "yes":
        line_3 = True      
    else:
        line_3 = False
        
    if year_of_birth <= 1943:
        age = True
    else:
        age = False
        
    total_tax_credit = medical_amount(d_net_income, med_expenses) + \
                     age_amount(net_income) + infirm(d_net_income) + \
                     political_amount(contribution)
    print "Your Ontario Tax Credit is: $%" %total_tax_credit


*In Python Shell after I click RUN*

Type "help", "copyright", "credits" or "license" for more information.
 
Evaluating tax_credit.py
| 
======================

Basically the user is asked 6 questions, and each answer will have an effect on the variables operated in the functions defined in the first segment of the program. When I execute the program the questions written won't appear in Python Shell though...
Thanks in advance for help!

Edited by: user12005824 on 2009-10-6 下午3:57

Edited by: user12005824 on 2009-10-6 下午3:59                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             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