FileCookieJar has not attribute "_self_load"

[Dragos]

I am trying to make a testing script to load/save cookies to a file
with FileCookieJar, but it results in this error: FileCookieJar has
not attribute "_self_load"

This is my script:

import urllib.request, urllib.parse,http.cookiejar
url="http://localhost/test.php"
cs=http.cookiejar.FileCookieJar()
cs.load("cookies.txt",ignore_discard=False, ignore_expires=False)
opener=urllib.request.build_opener(urllib.request.HTTPCookieProcessor
(cs))
y=opener.open(url)
print(y.read())

Thanks for helping.

 

[Dragos]

I am trying to make a testing script to load/save cookies to a file
with FileCookieJar, but it results in this error: FileCookieJar has
not attribute "_self_load"

This is my script:

import urllib.request, urllib.parse,http.cookiejar
url="http://localhost/test.php"
cs=http.cookiejar.FileCookieJar()
cs.load("cookies.txt",ignore_discard=False, ignore_expires=False)
opener=urllib.request.build_opener(urllib.request.HTTPCookieProcessor
(cs))
y=opener.open(url)
print(y.read())

Thanks for helping.

BUMP

 

[Gabriel Genellina]

En Fri, 16 Jan 2009 17:19:47 -0200, escribiste en el grupo
gmane.comp.python.general

I am trying to make a testing script to load/save cookies to a file
with FileCookieJar, but it results in this error: FileCookieJar has
not attribute "_self_load"

FileCookieJar is an abstract class, although it isn't clear at all from
the documentation. (You may want to file a documentation bug at
http://bugs.python.org)
You must instantiate a specific subclass (like MozillaCookieJar), which
determines the actual file format used.

 

[Dragos]

En Fri, 16 Jan 2009 17:19:47 -0200, escribiste en el grupo
gmane.comp.python.general


FileCookieJar is an abstract class, although it isn't clear at all from
the documentation. (You may want to file a documentation bug athttp://bugs.python.org)
You must instantiate a specific subclass (like MozillaCookieJar), which
determines the actual file format used.

Oh, thank you so much.
Using MozillaCookieJar works just fine.

But could you please explain what an abstract class is (or where i can
find documentation for this term). Thanks!

 

[Gabriel Genellina]

Oh, thank you so much.
Using MozillaCookieJar works just fine.

But could you please explain what an abstract class is (or where i can
find documentation for this term). Thanks!

Try http://en.wikipedia.org/wiki/Abstract_class
In short, it's an incomplete class, with "holes" that subclasses must fill
in order to get a complete, working class (a "concrete" class, as opposed
to the "abstract" base).

If you look at FileCookieJar, its load() method calls self._really_load
but no such method exists in that class nor its ancestors (this explains
the error you got). Subclasses of FileCookieJar *must* implement
_really_load to be usable.

It's customary to define the method anyway, and raise NotImplementedError;
this serves two purposes:
- document the expected interfase
- error messages are more meaningful
(FileCookieJar.save() is implemented this way; _really_load() should be
the same)

 

[Dragos]

En Sat, 17 Jan 2009 08:16:14 -0200, Dragos <[email protected]>  
escribió:






Tryhttp://en.wikipedia.org/wiki/Abstract_class
In short, it's an incomplete class, with "holes" that subclasses must fill  
in order to get a complete, working class (a "concrete" class, as opposed  
to the "abstract" base).

If you look at FileCookieJar, its load() method calls self._really_load  
but no such method exists in that class nor its ancestors (this explains  
the error you got). Subclasses of FileCookieJar *must* implement  
_really_load to be usable.

It's customary to define the method anyway, and raise NotImplementedError;  
this serves two purposes:
- document the expected interfase
- error messages are more meaningful
(FileCookieJar.save() is implemented this way; _really_load() should be  
the same)

Thanks, got it.