Is there an equivalent of slime for python?
For example, if I position the cursor on foo() and do M-. (jump to definition) I would like to see the source definition of the function foo
This should work regardless of whether foo is in
1) the local project directory
2) in some ~/.virtualenvs/bar/lib/site-packages
3) in some other python-path
4) virtual env is in use (ie, it should look in my current virtualenv)
Does the pymacs/ropemacs combination do any of this?
M-. normally runs the "find-tag" function.
You should create a TAGS file of your python source files. Then you "visit-tags-table" before doing a M-.
That way, Emacs will jump to all the definitions of the tag. Type C-u M-. to jump the next definition of your tag. See find-tag documentation for help. Consult Emacs help to know how to create a TAGS file from python source files.
You can for example use Exuberant Ctags for creating the TAGS file.
Go to the root directory of your python files and do this :
ctags -e -R .
A TAGS file is normally created at the root directory of the project.
To avoid the -e you can use etags and with a find you recursively add the py file:
find . -type f -name '*.py' | xargs etags