在python中打印出合適的紙幣生成程序

在python中編程相對較新，感謝您提供了我在另一個python項目上提供的最後一個問題上提供的所有快速幫助。無論如何，我爲Python項目編寫了一個新程序，該程序爲餐飲場所生成賬單。這是我的代碼如下，一切運行良好，我得到了項目所需的預期結果，我所經歷的兩個問題是，1。我需要沙漠的代價來打印---> 3.0，但--- --- > $ 3.00，實際上，我怎樣才能打印美元符號，以及如果是3.0 - > 3.00，或45.0 - > 45.00 ..以及美元符號在價格之前。很抱歉，如果這樣的事情已經被問..在python中打印出合適的紙幣生成程序

import math 

# constants 

Cost_Per_Desert = 3.00 
Tax_Rate = .075 
Gratuity_Tips = .15 
Adult_Meal_Cost = 12.75 
Child_Meal_Cost = .60*12.75 
Room_Fee = 450.00 
Less_Deposit = 250.00 


    def main(): 

    #   Input Section 


    Name = input("\n\n Customer:\t\t\t ") 
    Number_Of_Adults = int(input(" Number of Adults:\t\t ")) 
    Number_Of_Children = int(input(" Number of Children:\t\t ")) 
    Number_Of_Deserts = int(input(" Number of Deserts:\t\t ")) 



    print("\n\nCost Of Meal Per Adult:\t\t" , Adult_Meal_Cost) 
    print("Cost of Meal Per Child:\t\t" , round(Child_Meal_Cost,2)) 
    print("Cost Per Desert:\t\t" , round(Cost_Per_Desert,2)) 


    #  Processing/Calculations 

    Total_Adult_Meal_Cost = Adult_Meal_Cost* Number_Of_Adults 

    Total_Child_Meal_Cost = Child_Meal_Cost* Number_Of_Children 

    Total_Desert_Cost = Cost_Per_Desert* Number_Of_Deserts 

    Total_Food_Cost = Total_Adult_Meal_Cost + Total_Child_Meal_Cost  +   Total_Desert_Cost 

Total_Taxes = Total_Food_Cost * Tax_Rate 

Tips = Total_Food_Cost * Gratuity_Tips  

Total_Bill = Total_Food_Cost + Total_Taxes + Tips + Room_Fee 


#  Output Section 

print("\n\n Total Cost for Adult Meals: \t", Total_Adult_Meal_Cost) 

print(" Total Cost for Childs Meals: \t", Total_Child_Meal_Cost) 

print(" Total Cost for Desert: \t", Total_Desert_Cost) 

print(" Total Food Cost: \t\t", Total_Food_Cost) 

print("\n\n Plus 7.5% Taxes: \t\t", round(Total_Taxes,2)) 

print(" Plus 15.0% Tips: \t\t", round(Tips,2)) 

print(" Plus Room Fee: \t\t", Room_Fee) 


print("\n\n Total Bill: \t\t\t", round(Total_Bill,2)) 

print(" Less Deposit: \t\t\t", Less_Deposit) 

print("\n\nBalance Due: \t\t\t", round(Total_Bill - Less_Deposit,2)) 

print("\n\n\n\n\t\t Thank You For Using Passaic County Catering Services. ") 


main() 
input("\n\n\n\n\nPress Enter to Continue")

來源

2016-03-02 red

可能的複製[限制浮點數到兩個小數點]（http://stackoverflow.com/questions/455612/limiting-floats-to-two-decimal-points） – YBathia

看看[這裏：]（https://pyformat.info ） – jfsturtz

比方說，沙漠的成本是$ 3.00

cost = 3 
print("${0:.2f}".format(cost))

輸出：

$3.00

來源

2016-03-02 04:24:45 YBathia

謝謝！問題回答了 – red

當你需要添加一個$符號你只需簡單地在你的字符串中放一個$符號。
如果你想解決這個十進制數的地方，你只需要基本的字符串格式，如： print('pi is %.2f' % 3.14159) 和輸出將pi is 3.14

你可能會想喜歡讀：https://docs.python.org/2.7/library/string.html#formatspec

來源

2016-03-02 04:26:44 Fingal

在python中打印出合適的紙幣生成程序

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