AttributeError：＆＃39; _io.TextIOWrapper＆＃39;对象没有属性＆＃39;追加＆＃39;？

Question

打印以询问用户的姓名

name = input("what is your name ")

file_name = str(input("What do you want to name this .txt file\n> "))
if file_name[-4:] != ".txt":
    file_name += ".txt"

问候他们

要求提供姓名和员工姓名

print("Why hello",name,"now lets caculate that employee's next pay check")
def employees():
    emplist = []
    while True:
        names = input('What is the name of the employee')
        if names == 'done':
            break
        else:
            emplist += [names]
            print(emplist)
    pay(emplist)

要求每小时支付

    def pay(emplist):


for person in emplist:
        print("now i need hourly pay of",person,)
        pay = float(input("> "))

询问他们工作的时间

print("now i need the hours worked by",person,)
    hours = float(input("> "))

计算工资

做数学

if hours > 40:
        over = 1.50
        overtimeR = over * pay
        overtime = overtimeR * (hours-40)
        hours += 40
    else:
        overtime = 0

让他们做出不同的回应

尚未完成

if overtime > 0:
        hours2 = 40
        totalpay = (pay * hours2) + overtime
        pay_without_overtime = pay * hours2

else:
    totalpay = (pay * hours) + overtime

person_2 = ""

person_2 += person

info = ("Employee: "+str(person_2)+"\nTotal Hours: "+str(hours))




with open(file_name, 'a+')as file_data_2:
    file_data_2.append(info)





employees()

但是IT给了我错误

我该如何解决这个问题

AttributeError: '_io.TextIOWrapper' object has no attribute 'append'

Answer 1

当您使用with open(file_name, 'a+') as file_data_2:打开文件时，变量file_data_2将成为类_io.TextIOWrapper的实例，该类实际上没有此类属性。如果要查看您创建的任何变量可用的属性/方法，可以在Python的交互模式中轻松完成。打开终端，运行你的Python（在我的例子中是Python 3）：

$ python3

首先，打开文件并将其存储在变量中，与您在代码中的操作类似：

>>> file = open("sample.txt", 'a+')

变量file现在是_io.TextIOWrapper类的一个实例。您可以使用以下命令检查类的可用方法：

>>> dir(file)

这是输出：

['_CHUNK_SIZE', '__class__', '__del__', '__delattr__', '__dict__', 
'__dir__', '__doc__', '__enter__', '__eq__', '__exit__', '__format__', 
'__ge__', '__getattribute__', '__getstate__', '__gt__', '__hash__', 
'__init__', '__iter__', '__le__', '__lt__', '__ne__', '__new__', 
'__next__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', 
'__sizeof__', '__str__', '__subclasshook__', '_checkClosed', 
'_checkReadable', '_checkSeekable', '_checkWritable', '_finalizing', 
'buffer', 'close', 'closed', 'detach', 'encoding', 'errors', 'fileno', 
'flush', 'isatty', 'line_buffering', 'mode', 'name', 'newlines', 
'read', 'readable', 'readline', 'readlines', 'seek', 'seekable', 
'tell', 'truncate', 'writable', 'write', 'writelines']

如您所见，没有＆＃39;追加＆＃39;方法。但是，有＆＃39;写＆＃39;我想这就是你需要的。