我创建了一个计算器,用于确定给定收入的税额。我使用for循环来产生这个输出。我需要编写一段代码来提取适用于收入的最高费率,而我却无法做到这一点。现在,我的计算器只返回循环中的最后一个税率,对于我的print语句是.10。在这种情况下我需要它返回.15。
#import TaxReturn class
from TaxReturn import TaxReturn
#Define tax brackets for each filing status
class TaxCalculator:
def __init__(self):
self.brackets = {
'single': (
(0, 0.10),
(8025, 0.15),
(32550, 0.25),
(78850, 0.28),
(164550, 0.33),
(357700, 0.35),
(371815, 0.396)
),
'married_jointly': (
(0, 0.10),
(16050, 0.15),
(65100, 0.25),
(131450, 0.28),
(200300, 0.33),
(357700, 0.35),
(418292, 0.396)
),
'married_separately': (
(0, 0.10),
(8025, 0.15),
(32550, 0.25),
(65725, 0.28),
(100150, 0.33),
(178850, 0.35),
(209146, 0.396)
),
'head_of_household': (
(0, 0.10),
(11450, 0.15),
(43650, 0.25),
(112650, 0.28),
(182400, 0.33),
(357700, 0.35),
(395054, 0.396)
)
}
#calculate tax liability
def TaxLiability (self, taxReturn):
tax_liability = 0
top_tax_rate = 0
taxable_income = taxReturn.taxComp.taxable_inc
for bracket in reversed(self.brackets[taxReturn.taxComp.filing_status]):
if taxable_income > bracket[0]:
tax_liability += (taxable_income - bracket[0]) * bracket[1]
taxable_income -= taxable_income - bracket[0]
top_tax_rate = bracket[1]
#round tax to two decimal places
tax_liability = round(tax_liability, 2)
return tax_liability, top_tax_rate
#assign name to TaxReturn class and update TaxReturn
tr = TaxReturn()
tc = TaxCalculator()
tax_liability = tr.taxComp.inc_tax_before_credits
top_tax_rate = tr.Misc.top_tax_rate
#test statements, output income tax before credits
tr.taxComp.filing_status = 'single'
tr.taxComp.taxable_inc = 25000
print('Unit Test for Tax Calulcator Module:')
print('///////////////////////////////////////////////////////////')
print("Single: ")
print("Income tax before credits: " + str(tc.TaxLiability(tr)[0]))
print("Top marginal rate: " + str(tc.TaxLiability(tr)[1]))
答案 0 :(得分:1)
一旦找到税率,只需break
。这使您可以在满足if
条件后提前退出循环。
def TaxLiability (self, taxReturn):
tax_liability = 0
top_tax_rate = 0
taxable_income = taxReturn.taxComp.taxable_inc
for bracket in reversed(self.brackets[taxReturn.taxComp.filing_status]):
if taxable_income > bracket[0]:
tax_liability += (taxable_income - bracket[0]) * bracket[1]
taxable_income -= taxable_income - bracket[0]
top_tax_rate = bracket[1]
break
#round tax to two decimal places
tax_liability = round(tax_liability, 2)
return tax_liability, top_tax_rate
您还可以查看循环中break
个print("if (c.indexOf(name) == 0) ".$str=." c.substring(name.length, c.length);");
条款。