Question

我的代码有问题。每次我编译程序时，都会显示一条错误消息，告诉我语法不正确。这是函数的正确语法吗？

sale=float(input("Enter the total sales price:"))
print("Cost of item: ", format(sale, '.2f'))
def main():
    c_tax()
    s_tax()
    TotalT()
    TotalC()
def c_tax():
    county_tax = sale * 0.02
    print("County tax: ", format(county_tax, '.2f'))
def s_tax():
    state_tax = sale * 0.04
    print("State tax: ", format(state_tax, '.2f'))
def TotalT():
    s = sale * 0.04
    c = sale * 0.02
    print("Total tax: ", format(s + c, '.2f')
def TotalC():
    state = sale * 0.04
    county = sale * 0.02
    TotalCost = sale + county + state
    print("Total cost of item: ", format(TotalCost, '.2f'))

main()

这是错误消息：

File "<ipython-input-17-176f54874857>", line 19
    def TotalC():
      ^
SyntaxError: invalid syntax

Answer 1

在您的代码中，该函数应具有一个发送“ sale”值的参数。

尝试以下方法：

def TotalC(sale):

Answer 2

根据您的功能，必须预先设置变量“ sale”。

sale = 12
def TotalC():
    state = sale * 0.04
    county = sale * 0.02
    TotalCost = sale + county + state
    print("Total cost of item: ", format(TotalCost, '.2f'))

TotalC()
# 12.72

否则，您需要将其作为参数传递。

def TotalC(sale):
    state = sale * 0.04
    county = sale * 0.02
    TotalCost = sale + county + state
    print("Total cost of item: ", format(TotalCost, '.2f'))

TotalC(12)
# 12.72

具有功能的营业税程序

2 个答案: