To reproduce this:

1. Make a new project and create a file with the following lines:

from twisted.internet import reactor
reactor.run(|

where `|' indicates current point in emacs

2. M-: (rope-get-calltip) RET

Backtrace:

Debugger entered--Lisp error: (error "Python: Traceback (most recent call last):
  File \"/emacs/share/emacs/site-lisp/etc/python/Pymacs.py\", line 268, in loop
    value = eval(text)
  File \"<string>\", line 1, in <module>
  File \"/emacs/share/emacs/site-lisp/etc/python/ropemode/decorators.py\", line 53, in newfunc
    return func(*args, **kwds)
  File \"/emacs/share/emacs/site-lisp/etc/python/ropemode/interface.py\", line 194, in get_calltip
    return self._base_get_doc(_get_doc)
  File \"/emacs/share/emacs/site-lisp/etc/python/ropemode/interface.py\", line 217, in _base_get_doc
    self.resource, maxfixes)
  File \"/emacs/share/emacs/site-lisp/etc/python/ropemode/interface.py\", line 193, in _get_doc
    return codeassist.get_calltip(project, text, offset, *args, **kwds)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/contrib/codeassist.py\", line 94, in get_calltip
    pyname = fixer.pyname_at(offset)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/contrib/fixsyntax.py\", line 66, in pyname_at
    return new_pyname()
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/contrib/fixsyntax.py\", line 61, in new_pyname
    return rope.base.evaluate.eval_location(pymodule, newoffset)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/evaluate.py\", line 11, in eval_location
    return eval_location2(pymodule, offset)[1]
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/evaluate.py\", line 17, in eval_location2
    return pyname_finder.get_primary_and_pyname_at(offset)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/evaluate.py\", line 78, in get_primary_and_pyname_at
    holding_scope = self.module_scope.get_inner_scope_for_line(lineno)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/pyscopes.py\", line 132, in get_inner_scope_for_line
    return self._scope_finder.get_holding_scope(self, lineno, indents)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/pyscopes.py\", line 229, in get_holding_scope
    line_indents = self.get_indents(lineno)
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/pyscopes.py\", line 222, in get_indents
    self.lines.get_line(lineno))
  File \"/emacs/share/emacs/site-lisp/etc/python/rope/base/codeanalyze.py\", line 62, in get_line
    self.starts[lineno] - 1]
IndexError: list index out of range
")

I remember a similar problem being fixed a long time ago.
Are you using the latest versions of rope, ropemode and
ropemacs?

        Ali

On 2012-10-31 03:32 +0800, Ali Gholami Rudi wrote:
[snipped 22 lines]

I just updated the three components: rope/ropemode/ropemacs from
https://bitbucket.org/agr a minute ago and this bug is NOT fixed there.

Leo

The problem is the file does not end with a newline.  Although that's
an error in general, it may happen for code-assists, in which the
files may not compile.  Does this patch fix it?

Thanks,
Ali

--- a/rope/contrib/fixsyntax.py 2012-11-01 18:03:03.511663973 +0330
+++ b/rope/contrib/fixsyntax.py 2012-11-01 18:04:56.611829855 +0330
@@ -9,6 +9,8 @@
     def __init__(self, pycore, code, resource, maxfixes=1):
         self.pycore = pycore
         self.code = code
+        if code[-1] != '\n':
+            self.code = code + '\n'
         self.resource = resource
         self.maxfixes = maxfixes

On 2012-11-01 22:24 +0800, Ali Gholami Rudi wrote:

I am getting the same error with the patch even if the file ends with a
newline. The problem seems to be not having a closing ')'.

Thanks.
Leo

fixsyntax.py tries to fix syntax errors before parsing the
input string for code-assists.

I think some of python's error messages point to invalid
line numbers.  How about this patch?

        Ali

--- a/rope/contrib/fixsyntax.py 2012-11-02 08:44:23.932012064 +0330
+++ b/rope/contrib/fixsyntax.py 2012-11-02 08:49:15.592441539 +0330
@@ -29,7 +29,10 @@
             except exceptions.ModuleSyntaxError, e:
                 if tries < self.maxfixes:
                     tries += 1
-                    self.commenter.comment(e.lineno)
+                    lineno = e.lineno
+                    if lineno >= len(self.commenter.lines):
+                        lineno = len(self.commenter.lines) - 1
+                    self.commenter.comment(lineno)
                     code = '\n'.join(self.commenter.lines)
                     errors.append('  * line %s: %s ... fixed' % (e.lineno,
                                                                  e.message_))

On 2012-11-02 13:14 +0800, Ali Gholami Rudi wrote:

No luck here. I am getting the same error.

Leo

On 2012-11-02 13:59 +0800, Ali Gholami Rudi wrote:

Yes, it prints something like this: http://bpaste.net/show/55359/
without applying the patch.

The error I am getting is from running M-: (rope-get-calltip).

Leo

OK, fixsyntax.py cannot add the missing ')'.  This should at
least prevent the exception.

Thanks,
Ali

--- a/rope/contrib/fixsyntax.py 2012-11-02 13:54:40.000000000 +0330
+++ b/rope/contrib/fixsyntax.py 2012-11-02 13:53:40.102998269 +0330
@@ -96,8 +96,13 @@
         self._fix_incomplete_try_blocks(lineno, indents)

     def transfered_offset(self, offset):
+        """Return the new offset in the commented source"""
         lineno = self.code.count('\n', 0, offset)
         diff = sum(self.diffs[:lineno])
+        # the line containing offset was changed;
+        # assuming the change was in line indents
+        line_offset = offset - self.code.rfind('\n', 0, offset) - 1
+        diff += max(-line_offset, self.diffs[lineno])
         return offset + diff

     def _last_non_blank(self, start):

On 2012-11-02 18:25 +0800, Ali Gholami Rudi wrote:

Yes, it does.

Leo

On 2012-11-02 18:25 +0800, Ali Gholami Rudi wrote:

What would be the right thing to do?

BTW,

from twisted.internet import reactor
reactor.|

why no interesting completions (such as run, listenTCP etc.) at this
point?

Leo

How about completing "reactor.r" (or any other letter after dot)?

By the way, fixsyntax.py uses heuristics to fix syntax errors: it
comments lines and blocks that contain errors.  It is probably not
hard to improve it to handle more complex errors.  Patches are
welcome.

        Ali

On 2012-11-11 03:29 +0800, Ali Gholami Rudi wrote:

No completion for reactor.r.

Leo

The reactor is actually really fancy magic, so I doubt rope could follow it
using static analysis anyway.

http://twistedmatrix.com/trac/browser/trunk/twisted/internet/reactor.py

--
  Jasper

"Jasper St. Pierre" <jstpie...@mecheye.net> wrote:

You're right.  But adding twisted.internet.reactor to
extension_modules would have fixed it, if rope supported non-top-level
extension modules; I'm not sure, but as far as I remember it does not.
I think it was Darren Hoo who posted patches for fixing it (I guess it
is in the thread with the title "code completion with c-extension
modules not work") but unfortunately it was not merged, IIRC.  It
would be wonderful if someone volunteers to update and test the
patches to get them merged.

        Ali