discuss: howtopedia
Subject:
Re: [discuss] howtopedia
From:
Alex Nordstrom ####@####.####
Date:
3 Oct 2005 07:50:57 -0000
Message-Id: <200510031550.21426.lx@se.linux.org>
Monday, 3 October 2005 14:24 David Lawyer wrote:
> For example, I was having problems with the old parallel port but LDP
> never had a HOWTO on that topic. Searching on the text of an error
> message usually finds a discussion messages which may or may not
> provide a solution to the problem.
It probably has to do with the search terms one uses to search for the
information one desires for a certain situation.
When looking to learn about a topic from scratch, I search for the name
of the topic and "howto". This often returns an LDP document, if one
covering the topic exists. If, however, I am faced with a problem
having a narrow scope, as in your example, I tend to search for a
specific error message. As you state, this more often than not results
in hits from mailing list discussions.
This is not a failure of the search engines. They return list
discussions because these *are* the best sources of information
covering the circumstances of such messages.
The issue, then, is that most howto-style documents fail to provide
practical troubleshooting sections.
Howtos give top-down, step-by-step instructions on how to approach new
topics, detailing inner workings and giving a thorough theoretical
understanding, but they often miss out on an opportunity to convey
bottom-up information when things don't go according to plan.
--
Alex Nordstrom
http://lx.n3.net/
Please do not CC me in followups;
I am subscribed to the tldp discussion list.
--> -->
<type 'exceptions.IOError'> | Python 2.5.2: /usr/bin/python
Wed Jul 3 09:42:55 2024 |
A problem occurred in a Python script. Here is the sequence of
function calls leading up to the error, in the order they occurred.
| /opt/ezmlm-browse-0.20/main.py in main() |
424
|
425 if path is not None:
|
426 main_path(path)
|
427 else:
|
428 main_form()
|
| global main_form = <function main_form at 0x898ac6c> |
| /opt/ezmlm-browse-0.20/main.py in main_form() |
378 except ImportError:
|
379 die(ctxt, "Invalid command")
|
380 module.do(ctxt)
|
381
|
382 def main():
|
| module = <module 'commands.showmsg' from '/opt/ezmlm-browse-0.20/commands/showmsg.pyc'>, module.do = <function do at 0x8993a3c>, global ctxt = {'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'} |
| /opt/ezmlm-browse-0.20/commands/showmsg.py in do(ctxt={'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}) |
18 write(html('msg-pager') % ctxt)
|
19 write('<hr>')
|
20 sub_showmsg(ctxt, ctxt[MSGNUM])
|
21 write('<hr>')
|
22 write(html('msg-pager') % ctxt)
|
| global sub_showmsg = <function sub_showmsg at 0x898a1ec>, ctxt = {'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, global MSGNUM = 'msgnum' |
| /opt/ezmlm-browse-0.20/globalfns.py in sub_showmsg(ctxt={'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, msgnum=9692) |
229 format_timestamp(ctxt, ctxt)
|
230 write(html('msg-header') % ctxt)
|
231 rec_showpart(ctxt, msg, 0)
|
232 write(html('msg-footer') % ctxt)
|
233 ctxt.pop()
|
| global rec_showpart = <function rec_showpart at 0x898a1b4>, ctxt = {'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, msg = <email.message.Message instance at 0x89e4f2c> |
| /opt/ezmlm-browse-0.20/globalfns.py in rec_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x89e4f2c>, partnum=1) |
205 else:
|
206 for p in part.get_payload():
|
207 partnum = rec_showpart(ctxt, p, partnum+1)
|
208 else:
|
209 write(html('msg-sep') % ctxt)
|
| partnum = 1, global rec_showpart = <function rec_showpart at 0x898a1b4>, ctxt = {'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, p = <email.message.Message instance at 0x89ef24c> |
| /opt/ezmlm-browse-0.20/globalfns.py in rec_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x89ef24c>, partnum=2) |
208 else:
|
209 write(html('msg-sep') % ctxt)
|
210 sub_showpart(ctxt, part)
|
211 return partnum
|
212
|
| global sub_showpart = <function sub_showpart at 0x898a144>, ctxt = {'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part = <email.message.Message instance at 0x89ef24c> |
| /opt/ezmlm-browse-0.20/globalfns.py in sub_showpart(ctxt={'cmd': 'showmsg', 'threadidx': 4, 'HTTP_X_FORWA...HTTP_ACCEPT_ENCODING': 'gzip, br, zstd, deflate'}, part=<email.message.Message instance at 0x89ef24c>) |
164 type = ctxt[TYPE] = part.get_content_type()
|
165 ctxt[FILENAME] = part.get_filename()
|
166 template = html('msg-' + type.replace('/', '-'))
|
167 if not template:
|
168 template = html('msg-' + type[:type.find('/')])
|
| global template = <function template at 0x8982e9c>, global html = <function html at 0x8982ed4>, type = 'application/pgp-signature', type.replace = <built-in method replace of str object at 0x89f01a8> |
| /opt/ezmlm-browse-0.20/globalfns.py in html(name='msg-application-pgp-signature') |
40
|
41 def html(name):
|
42 return template(name + '.html')
|
43
|
44 def xml(name):
|
| global template = <function template at 0x8982e9c>, name = 'msg-application-pgp-signature' |
| /opt/ezmlm-browse-0.20/globalfns.py in template(filename='msg-application-pgp-signature.html') |
31 except IOError:
|
32 if not _template_zipfile:
|
33 _template_zipfile = zipfile.ZipFile(sys.argv[0])
|
34 try:
|
35 f = _template_zipfile.open(n).read()
|
| global _template_zipfile = None, global zipfile = <module 'zipfile' from '/usr/lib/python2.5/zipfile.pyc'>, zipfile.ZipFile = <class zipfile.ZipFile at 0x891ba7c>, global sys = <module 'sys' (built-in)>, sys.argv = ['-c', '/opt/ezmlm-browse-0.20'] |
| /usr/lib/python2.5/zipfile.py in __init__(self=<zipfile.ZipFile instance at 0x8991c6c>, file='-c', mode='r', compression=0, allowZip64=False) |
337 self.filename = file
|
338 modeDict = {'r' : 'rb', 'w': 'wb', 'a' : 'r+b'}
|
339 self.fp = open(file, modeDict[mode])
|
340 else:
|
341 self._filePassed = 1
|
| self = <zipfile.ZipFile instance at 0x8991c6c>, self.fp = None, builtin open = <built-in function open>, file = '-c', modeDict = {'a': 'r+b', 'r': 'rb', 'w': 'wb'}, mode = 'r' |
<type 'exceptions.IOError'>: [Errno 2] No such file or directory: '-c'
args =
(2, 'No such file or directory')
errno =
2
filename =
'-c'
message =
''
strerror =
'No such file or directory'
