你怎么用泡菜？ [英] how do you use pickle?
问题描述
这就是我所拥有的：
导入泡菜
data = open（r''C：\ pickle_data。 txt''，''w''）
image = open（r''C：\ peakhell.jpg''）
pickle.Pickler（data）
data.dump（图片）
data.close（）
image.close（）
首先，我不确定第二行是否可以做到这一点。但是我的主要问题是我不知道如何在腌制
对象时定义步骤。你是如何首先创建对象的？它会返回一个值吗？我试过了：
pickler = pickle.Pickler（数据）
pickle.Pickler（数据）
然后我试过了：
pickler.dump（图片）
data.dump（图片）
基本上，我我只是对所涉及的所有语法感到困惑。哪个
对象我操作，什么时候？我无法在
文档或交互式帮助中找到这些答案，因为我没有看到任何示例。
此外，我每次都会收到此错误：
Traceback（最近一次调用最后一次）：
文件" C：\Documents and Settings \jsaler01.TUFTS \\ \\ MY
Documents\Python24 \ _myscripts\challenges \ pickle.py" ，第3行，在-toplevel-
进口泡菜
文件C：\Documents and Settings\jsaler01.TUFTS \ Myy />
Documents\Python24\myscripts\challenges\pickle.py" ，第7行，在-toplevel-
pickle.Pickler（数据）
AttributeError：''module''对象没有属性''Pickler''
所以这让我很困惑，因为如果它甚至无法通过最初创建的pickler对象，我必须完全错误地使用语法
。
Here''s what I have:
import pickle
data = open(r''C:\pickle_data.txt'', ''w'')
image = open(r''C:\peakhell.jpg'')
pickle.Pickler(data)
data.dump(image)
data.close()
image.close()
First off, I''m not sure the second line is the way to do that. But my
main problem is I don''t know how to define the steps when pickling an
object. How do you first create the object? Does it return a value? I tried:
pickler = pickle.Pickler(data)
pickle.Pickler(data)
Then I tried:
pickler.dump(image)
data.dump(image)
Basically, I''m just confused about all the syntax involved. Which
objects do I operate on, and when? I can''t find these answers in the
documentation or in the interactive help, because I don''t see any examples.
Furthermore, I get this error every time:
Traceback (most recent call last):
File "C:\Documents and Settings\jsaler01.TUFTS\My
Documents\Python24\myscripts\challenges\pickle.py" , line 3, in -toplevel-
import pickle
File "C:\Documents and Settings\jsaler01.TUFTS\My
Documents\Python24\myscripts\challenges\pickle.py" , line 7, in -toplevel-
pickle.Pickler(data)
AttributeError: ''module'' object has no attribute ''Pickler''
So that makes me really confused, because I must have the syntax totally
wrong if it can''t even get past the initial creation of a pickler object.
推荐答案
John Salerno写道：
John Salerno wrote:
这就是我所拥有的：
进口泡菜
数据=打开（r''C：\ pickle_data.txt''，''w''）
image = open（r''C：\ peakhell .jpg''）
pickle.Pickler（数据）
data.dump（图片）
data.close（）
image.close（）
首先，我不确定第二行是否可以做到这一点。但我的主要问题是我不知道如何在腌制
对象时定义步骤。你是如何首先创建对象的？它会返回一个值吗？我试过了：
pickler = pickle.Pickler（数据）
pickle.Pickler（数据）
然后我试过了：
pickler .dump（图片）
data.dump（图片）
基本上，我只是对所涉及的所有语法感到困惑。我操作哪些
对象
Here''s what I have:
import pickle
data = open(r''C:\pickle_data.txt'', ''w'')
image = open(r''C:\peakhell.jpg'')
pickle.Pickler(data)
data.dump(image)
data.close()
image.close()
First off, I''m not sure the second line is the way to do that. But my
main problem is I don''t know how to define the steps when pickling an
object. How do you first create the object? Does it return a value? I tried:
pickler = pickle.Pickler(data)
pickle.Pickler(data)
Then I tried:
pickler.dump(image)
data.dump(image)
Basically, I''m just confused about all the syntax involved. Which
objects do I operate on
任何支持酸洗的对象。
文件句柄不属于那个小组（你有什么期望
pickle与文件句柄有关？）
或者是对象参考Pickler实例？你真的不需要这么做; b $ b b b b b b b b b b b b b b b b b b b只需使用dump * function *：
pickle.dump（对象，文件）
但如果你坚持使用你自己的Pickler例如，你必须将pickler实例保存在一个变量中，然后调用dump方法，在$ / b
的立场中：
myfile = open（somefilename，" wb"）
mypickler = pickle.Pickler（myfile）
mypickler.dump（object）
>
< / F>
any object that supports pickling.
file handles does not belong to that group (what did you expect
pickle to do with a file handle ?)
or did "object" refer to the Pickler instance? you don''t really need to
bother with that; just use the dump *function* instead:
pickle.dump(object, file)
but if you insist on using your own Pickler instance, you have to save
the pickler instance in a variable, and call the dump method on that in-
stance:
myfile = open(somefilename, "wb")
mypickler = pickle.Pickler(myfile)
mypickler.dump(object)
</F>
Fredrik Lundh写道：
Fredrik Lundh wrote:
文件句柄不属于那个小组（你期望用文件句柄做什么？）
或者做了对象参考Pickler实例？你真的不需要为此烦恼;只需使用dump * function *：
pickle.dump（对象，文件）
但如果你坚持使用你自己的Pickler实例，你必须保存
变量中的pickler实例，并在其中调用dump方法：
myfile = open（somefilename，" wb"）
mypickler = pickle .Pickler（myfile）
mypickler.dump（对象）
file handles does not belong to that group (what did you expect
pickle to do with a file handle ?)
or did "object" refer to the Pickler instance? you don''t really need to
bother with that; just use the dump *function* instead:
pickle.dump(object, file)
but if you insist on using your own Pickler instance, you have to save
the pickler instance in a variable, and call the dump method on that in-
stance:
myfile = open(somefilename, "wb")
mypickler = pickle.Pickler(myfile)
mypickler.dump(object)
对不起，但我非常困惑。似乎什么都没有用于我/ b $ b我。我认为*我需要挑选的是一个图像文件，但到目前为止我认为
所有我正在做的是将文件句柄作为''对象'传递，其中
可能是不正确的。我如何让实际的图像对象通过
in？但是我也试过腌制一根绳子而且也没用。
我尝试了两种你建议的方式，但是我不能错过这些错误。我
继续获得
AttributeError：''module''对象没有属性''dump''（当我使用
$时） b $ b函数）
或
AttributeError：''module''对象没有属性''dump''（当我创建时）
一个实例）
我需要做些什么才能使用pickle模块？我的
程序似乎认识到导入，但它一直说没有什么
是它的一个属性。
I''m sorry, but I''m terribly confused. Nothing seems to be working for
me. I *think* what I need to pickle is an image file, but so far I think
all I''m doing is passing the file handle in as the ''object'', which
probably isn''t correct. How would I get the actual image object to pass
in? But I also tried pickling a string and that didn''t work either.
I tried it both ways you suggest, but I can''t get past the errors. I
keep getting either
AttributeError: ''module'' object has no attribute ''dump'' (when I use the
function)
or
AttributeError: ''module'' object has no attribute ''dump'' (when I create
an instance)
Is there something special I need to do to use the pickle module? My
program seems to recognize the import, but it keeps saying that nothing
is an attribute of it.
John Salerno写道：
John Salerno wrote:
AttributeError：''module''对象没有属性''dump''（当我创建一个实例时）
AttributeError: ''module'' object has no attribute ''dump'' (when I create
an instance)
应该是：
AttributeError：''module''对象没有属性''Pickler''（当我
创建一个实例）
That should be:
AttributeError: ''module'' object has no attribute ''Pickler'' (when I
create an instance)
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