Python AttributeError: 'set' 对象没有属性 'items'
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AttributeError: 'set' object has no attribute 'items'
提问by MTMA
I am very new to python and have been trying to teach myself as I go (not the best method this deep into python but for time's sake I need too). The modules I've imported are Tkinter and csv. Let me know if you have any questions,
我对python非常陌生，并且一直在尝试自学（不是深入python的最佳方法，但为了时间的缘故，我也需要）。我导入的模块是 Tkinter 和 csv。如果您有任何问题，请告诉我
For the sake of brevity I am not going to post my entire code on here but I will include the entire error and indicate the line that the error is applying to. Everything that is below is in a class called MainApp.
为简洁起见，我不会在这里发布我的整个代码，但我会包含整个错误并指出错误适用的行。下面的所有内容都在一个名为 MainApp 的类中。
def SubmitEdit(self):
self.key=""
self.val=""
new_rows = []
self.changes = {self.key:self.val}
with open("info.csv",'rb') as f:
reader = csv.reader(f):
for row in reader:
new_row = row
for field in row:
if field == "NAME":
print "groovy"
for (self.key,self.val) in self.changes.items():
new_row = [ x.replace(self.key,self.val) for x in new_row]
new_rows.append(new_row)
with open("info.csv","wb") as f:
writer = csv.writer(f):
writer.writerows(new_rows)
I wrote this code out separately to make sure it worked before putting it in the program and it worked perfectly, but when I put it in the class and made the changes (I thought) I needed to make to the lines of code / variables it didn't work. So that leads me to believe that I'm just correcting something incorrectly.
我单独编写了这段代码，以确保在将其放入程序之前它可以正常工作并且它运行良好，但是当我将它放入类中并进行更改时（我认为）我需要对代码行/变量进行更改没有用。所以这让我相信我只是在纠正错误。
Here is the error:
这是错误：
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python27\lib\lib-tk\Tkinter.py",line 1536, in__call__
return self.func(*args)
File "C:\Python27\draft.py", line 328, in SubmitEdit
for (self.key,self,val) in self.changes:
AttributeError: 'set' object has no attribute 'items'
Where line 328 refers to the line: "or (self.key,self.val) in self.changes.items():"
其中第 328 行是指以下行：“or (self.key,self.val) in self.changes.items():”
I have changed around (I feel like) the presence or absence of "self." for all variables but I just can't get it to work.
我已经改变了（我觉得）“自我”的存在或不存在。对于所有变量，但我无法使其正常工作。
EDIT: I altered the code to look like this:
编辑：我将代码更改为如下所示：
def SubmitEdit(self):
new_rows = []
self.changes = {"MTMA",123}
with open("info.csv",'rb') as f:
reader = csv.reader(f):
for row in reader:
new_row = row
for field in row:
if field == "NAME":
print "groovy"
for (key,val) in self.changes.items():
new_row = [ x.replace(key,val) for x in new_row]
new_rows.append(new_row)
with open("info.csv","wb") as f:
writer = csv.writer(f):
writer.writerows(new_rows)
as per the comments, but still get the exact same error.
根据评论，但仍然得到完全相同的错误。
采纳答案by Anand S Kumar
As you can see from the latest updated code -
正如您从最新更新的代码中看到的那样-
self.changes = {"MTMA",123}
When you define self.changes as above , you are actually defining a set , not a dictionary , since you used ',' (comma) instead of colon , I am pretty sure in your actual code you are using comma itself , not colon .
当你像上面那样定义 self.changes 时，你实际上是在定义一个集合，而不是一个字典，因为你使用了 ',' （逗号）而不是冒号，我很确定在你的实际代码中你使用的是逗号本身，而不是冒号。
To define a dictionary with "MTMA" as key and 123 as value , use a colon in between them , Example -
要定义以“MTMA”为键和 123 为值的字典，请在它们之间使用冒号，例如 -
self.changes = {"MTMA":123}
Do similarly in your actual code as well.
在您的实际代码中也做类似的事情。
If what you want is an empty dictionary , define it as -
如果您想要的是一个空字典，请将其定义为 -
self.changes = {}
