NameError (global name 'namespace' is not defined) - more diagnos tics and code
Even more diagnostic information the pecurliar 'namespace' error. I loaded Zope 2-4-3 onto my box and loaded in the product and folder (with info) in their appropriate places. Then I loaded the python scripts into the editor and pressed the "Save Changes" button do recompile. It didn't help. Same problem. NameError: global name 'namespace' is not defined. I'm wondering if my technique for getting information from an object isn't frought with peril. Is there a technique where I could return a particular object from a list of objects? Getting an actual object is easy to do. However, the problem comes when the search is unsuccessful. What do you return? The below code is what I developed to remedy that problem. The problem with the remedy is that it doesn't work in Zope 2-4-3 (although it did in 2-3-1). Note, the DTML code from which the python script is called used the contents namespace. Here is the original python script code: found = 0 # flag to indicate that the object was/wasn't found... contents = [] # the return list... # Run through the objects in the current (context) folder to see if there is a match (with given_title)... for obj in context.objectValues('Image'): if found == 0: if given_title == obj.title: url = obj.absolute_url title = obj.title contents.append(namespace(url=url, title=title)[0]) found = 1 # Set flag on success... # If you can't find it in the context, then check the container... for obj in container.objectValues('Image'): if found == 0: if given_title == obj.title: url = obj.absolute_url title = obj.title contents.append(namespace(url=url, title=title)[0]) found = 1 # Set flag on success... # Return indicative values if the desired object was not found... if found == 0: contents.append(namespace(url='', title='')[0]) vars = namespace(contents=contents) return vars ----- As the namespace issue wss causing the problem, I tried to get around it by doing the following: found = 0 # flag to indicate that the object was/wasn't found... # Run through the objects in the current (context) folder to see if there is a match (with given_title)... for obj in context.objectValues('Image'): if found == 0: if given_title == obj.title: ret_obj = obj found = 1 # Set flag on success... # If you can't find it in the context, then check the container... for obj in container.objectValues('Image'): if found == 0: if given_title == obj.title: ret_obj = obj found = 1 # Set flag on success... return ret_obj ### ... which works just fine _IF_ you find the object. If not, the DTML code is still going to look for a property and not find one (because nothing is returned). To fix that, I added a "dummy" object for errors, to wit: class myErrorClass: element_number = -1 ... was tacked on at the beginning of the script, and ... if found == 0: an_Error = myErrorClass() return an_Error else: return ret_obj ... was tacked on at the end. Unfortunately, when you run into a condition where no legitimate object was found (i.e., found == 0), you get a screwy response from Zope. The username/password challenge comes up (even if you are in the manage session as the manager). No username/password combination exists to get through that. In short, something about instantiating the class screwed up Zope. What does one do in such a situation? Thank you all in advance. Ron --- complaw@hal-pc.org wrote:
As I said before, the above code works just fine in Zope 2-3-1. However, it fails (gets the NameError) in both versions 2-4-2 and 2-4-3. Is this because Zope went to python 2.x instead of 1.5?
Do I have to rewrite my code? Do I have to tell my client to get 2-3-1?
Any hints would be greatly appreciated.
Thanks,
Ron
This may be a version problem, or it may not.
I wrote a fairly straightforward Zope application in Zope 2-3-1 on Linux.
(That
instance of Zope has been working just fine for months and hey, it wasn't broke so I didn't fix it. The Linux box has been up for 132 days and I like the fact that I only have to fuss with Zope, if anything at all.)
I created a simple product and associated folder (with a slew of Folders, DTML Documents, python scripts, and DTML Methods. Then I exported them and shipped both the product and the site off to a client who had downloaded and installed Zope 2-3-4 for Windows.
The client got into the Zope management screen (after a little hand-holding, but he didn't read any documentation, so I can't complain). I talked him through the processes of unzip/untar the product, and loading the particular site.
Now the client can pull up a browser and accurately read index_html of the main folder. However, when he tries to read any of the DTML Documents, Folders, etc. he gets:
Zope Error
Error Type: NameError Error Value: global name 'namespace' is not defined
Is this problem between different versions of Zope? namespace is pretty fundamental. I don't see how it could have worked fine under 2-3-1 and not under 2-4-3.
Thanks in advance for any help.
Ron
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The PythonScript in question likely does not have its "namespace" helper variable bound to the name "namespace". You can look on the "bindings" tab of the script to see if this is true. ----- Original Message ----- From: <Ronald.Chichester@bakerbotts.com> To: <zope@zope.org> Sent: Friday, December 07, 2001 3:35 PM Subject: [Zope] NameError (global name 'namespace' is not defined) - more diagnos tics and code
Even more diagnostic information the pecurliar 'namespace' error.
I loaded Zope 2-4-3 onto my box and loaded in the product and folder (with info) in their appropriate places. Then I loaded the python scripts into the editor and pressed the "Save Changes" button do recompile. It didn't help. Same problem. NameError: global name 'namespace' is not defined.
I'm wondering if my technique for getting information from an object isn't frought with peril. Is there a technique where I could return a particular object from a list of objects? Getting an actual object is easy to do. However, the problem comes when the search is unsuccessful. What do you return? The below code is what I developed to remedy that problem. The problem with the remedy is that it doesn't work in Zope 2-4-3 (although it did in 2-3-1). Note, the DTML code from which the python script is called used the contents namespace. Here is the original python script code:
found = 0 # flag to indicate that the object was/wasn't found... contents = [] # the return list...
# Run through the objects in the current (context) folder to see if there is a match (with given_title)... for obj in context.objectValues('Image'): if found == 0: if given_title == obj.title: url = obj.absolute_url title = obj.title contents.append(namespace(url=url, title=title)[0]) found = 1 # Set flag on success...
# If you can't find it in the context, then check the container... for obj in container.objectValues('Image'): if found == 0: if given_title == obj.title: url = obj.absolute_url title = obj.title contents.append(namespace(url=url, title=title)[0]) found = 1 # Set flag on success...
# Return indicative values if the desired object was not found... if found == 0: contents.append(namespace(url='', title='')[0])
vars = namespace(contents=contents)
return vars
-----
As the namespace issue wss causing the problem, I tried to get around it by doing the following:
found = 0 # flag to indicate that the object was/wasn't found...
# Run through the objects in the current (context) folder to see if there is a match (with given_title)... for obj in context.objectValues('Image'): if found == 0: if given_title == obj.title: ret_obj = obj found = 1 # Set flag on success...
# If you can't find it in the context, then check the container... for obj in container.objectValues('Image'): if found == 0: if given_title == obj.title: ret_obj = obj found = 1 # Set flag on success...
return ret_obj
###
... which works just fine _IF_ you find the object. If not, the DTML code is still going to look for a property and not find one (because nothing is returned). To fix that, I added a "dummy" object for errors, to wit:
class myErrorClass: element_number = -1
... was tacked on at the beginning of the script, and ...
if found == 0: an_Error = myErrorClass() return an_Error else: return ret_obj
... was tacked on at the end.
Unfortunately, when you run into a condition where no legitimate object was found (i.e., found == 0), you get a screwy response from Zope. The username/password challenge comes up (even if you are in the manage session as the manager). No username/password combination exists to get through that. In short, something about instantiating the class screwed up Zope.
What does one do in such a situation?
Thank you all in advance.
Ron
---
complaw@hal-pc.org wrote:
As I said before, the above code works just fine in Zope 2-3-1. However, it fails (gets the NameError) in both versions 2-4-2 and 2-4-3. Is this because Zope went to python 2.x instead of 1.5?
Do I have to rewrite my code? Do I have to tell my client to get 2-3-1?
Any hints would be greatly appreciated.
Thanks,
Ron
This may be a version problem, or it may not.
I wrote a fairly straightforward Zope application in Zope 2-3-1 on
Linux. (That
instance of Zope has been working just fine for months and hey, it wasn't broke so I didn't fix it. The Linux box has been up for 132 days and I like the fact that I only have to fuss with Zope, if anything at all.)
I created a simple product and associated folder (with a slew of Folders, DTML Documents, python scripts, and DTML Methods. Then I exported them and shipped both the product and the site off to a client who had downloaded and installed Zope 2-3-4 for Windows.
The client got into the Zope management screen (after a little hand-holding, but he didn't read any documentation, so I can't complain). I talked him through the processes of unzip/untar the product, and loading the particular site.
Now the client can pull up a browser and accurately read index_html of the main folder. However, when he tries to read any of the DTML Documents, Folders, etc. he gets:
Zope Error
Error Type: NameError Error Value: global name 'namespace' is not defined
Is this problem between different versions of Zope? namespace is pretty fundamental. I don't see how it could have worked fine under 2-3-1 and not under 2-4-3.
Thanks in advance for any help.
Ron
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participants (2)
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Chris McDonough -
Ronald.Chichester＠bakerbotts.com