列表的总和不能放在我要写入的文件中。 可以做什么？

Question

我在将总数写入新文件时遇到了很多麻烦。 当我运行此代码时，它给了我这样的错误代码：

line 115, in <module>
    OutputFile.write("The total amount of money you spent on food is $"+str(round(FoodTotal,2))+"." +'/n')
TypeError: 'list' object is not callable

我试过用方括号括起来列表。 我也尝试将每个列表的总和转换为一个字符串，但我得到了相同的结果。 我能做些什么？

#import file and read it, change the Expenses.txt name into the name of the file you wish to read
FileName=input("Please input the name of the file you wish to read and include the .txt! (Remember to place the file in the same folder as this python file): ")
Expense=open(FileName ,"r")
#create five lists which the data will be sorted into based on word after value
FoodList=[]
HousingList=[]
TransportationList=[]
EntertainmentList=[]
MiscList=[]
#create a short term list to sort the expenses into
print()
count=0
for line in Expense:
    str=line.split()
    print(str)
    count+=1
    if "Food" in str:
        FoodPrice=float(str[0])
        FoodList.append(FoodPrice)
    elif "Housing" in str:
        HousingPrice=float(str[0])
        HousingList.append(HousingPrice)
    elif "Transportation" in str:
        TransportationPrice=float(str[0])
        TransportationList.append(TransportationPrice)
    elif "Entertainment" in str:
        EntertainmentPrice=float(str[0])
        EntertainmentList.append(EntertainmentPrice)
    elif "Misc" in str:
        MiscPrice=float(str[0])
        MiscList.append(MiscPrice)
    else:
        print("The Text File Provided is not in the Correct Format")
        break
    str.clear()
    
print(FoodList)
print(HousingList)
print(TransportationList)
print(EntertainmentList)
print(MiscList)

#add all the expenses by category
FoodTotal=round(sum(FoodList),2)
print("The total amount of money you spent on food is $",round(FoodTotal,2)," .")

HousingTotal=sum(HousingList)
print("The total amount of money you spent on housing costs is $",round(HousingTotal,2)," .")
#HousingPrint=str("The total amount of money you spent on housing costs is $",round(HousingTotal,2))," .")


TransportationTotal=sum(TransportationList)
print("The total amount of money you spent on transportation is $",(round(TransportationTotal,2))," .")
#TransportationPrint=str("The total amount of money you spent on transportation is $",(round(TransportationTotal,2))," .")


EntertainmentTotal=sum(EntertainmentList)
print("The total amount of money you spent on entertainment is $",(round(EntertainmentTotal,2))," .")
#EntertainmentPrint=str("The total amount of money you spent on entertainment is $",(round(EntertainmentTotal,2))," .")


MiscTotal=sum(MiscList)
print("The total amount of money you spent on miscellaneous expenses is $",(round(MiscTotal,2))," .")
#MiscPrint=str("The total amount of money you spent on miscellaneous expenses is $",(round(MiscTotal,2))," .")


#add all of the expenses together for the total amount of money spent
TotalExpenses=FoodTotal+HousingTotal+TransportationTotal+EntertainmentTotal+MiscTotal
OutputName=FileName.replace(".txt","-Output.txt")
OutputFile=open(OutputName,"w")
OutputFile.write("The total amount of money you spent on food is $"+str(round(FoodTotal,2))+"." +'/n')
OutputFile.write(HousingPrint+'/n')
OutputFile.write(TransportationPrint+'/n')
OutputFile.write(EntertainmentPrint+'/n')
OutputFile.write(MiscPrint+'/n')
OutputFile.write(TotalString+'/n')
OutputFile.write(OutputString+'/n')


TotalString=str("There were ",count," expenses that totaled: $",round(TotalExpenses,2)," .")
OutputString=str("Output file: "+OutputName+" has been created.")

print("There were ",count," expenses that totaled: $",round(TotalExpenses,2)," .")
print("Output file: "+OutputName+" has been created.")

"""
output=open("OutputFile.txt","w")
output.write(line)
output.write("\n")
output.close()
"""
Expense.close()

Answer 1

你在这里重新分配了str ：

str=line.split()

永远不要命名变量str 、 list或任何其他内置名称——这将导致与此完全相同的混淆错误。 在你的代码上运行一个 linter 将帮助你捕捉到这样的事情。

对于它的价值，使用str和+组成一个字符串通常被认为是“unpythonic”。 使用 f 字符串更容易：

OutputFile.write(f"The total amount of money you spent on food is ${round(FoodTotal,2)}.\n")

Answer 2

您正在覆盖str=line.split()上的内置str将其更改为其他内容。 也使用f strings ，因为您不需要进行显式类型转换：

OutputFile.write(f"The total amount of money you spent on food is ${round(FoodTotal,2)}. \n")

Answer 3

str=line.split()是你的问题。 您隐藏了内置名称str ，将其替换为列表，因此str(round(FoodTotal,2))类的行将失败，因为str不再是 function 。