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If you apply the patch from bug 545436 to
python-mode.el, the attached code allows programmers
to get help from pydoc about the current possibly
dotted expression.
This is just a quick-n-dirty hack, but seems at
least marginally useful.

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FYI, a *somewhat* similar thing can be found at bug 541031.

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One problem with your patch is that symbol-near-point is a
XEmacs-ism. I think we can fix that, and avoid the need to
"regexp-unquote" the return value by just inlining what we
need of symbol-near-point. I'll work out that patch and
check it in if it works.

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Skip, check out the attached patch. This ought to work in
Emacs too. It binds py-help-at-point to C-c C-h.

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The patch works for me for methods but fails for 
symbols. I hadn't tried it for something like 
"sys.platform" before, so I'm pretty sure my original
patch failed for that as well. When I ask for help on 
sys.platform it complains about "no help for 'linux2'". 
That makes sense, since it's asking for
 pydoc.help(sys.platform)
Too bad Python doesn't have Lisp's quote feature! <0.5 
wink>
Ooh! Ooh! Pydoc *does* understand quoting! Try
 pydoc.help("sys.platform")
 pydoc.help("sys.exc_info")
Looks like the help arg should always be quoted.
A couple other suggestions:
 * How about binding py-help-at-point to [F1]?
 * How about adding the following two lines to the
 end of py-help-at-point:
 (set-buffer "*Python Output*")
 (help-mode)
 That puts point in the *P O* buffer and makes it
 easy to dump the help buffer when you're through
 with it (just press 'q').
S

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I like the fix for sys.platform, and the binding to [f1]. 
I'm less sure about the (help-mode) bit because *Python
Output* is overloaded for other things too. Oh well, I'll
add them all and see if anybody complains. :)