Report the class name and method or function name of current location in a Python buffer open in Vim

pythonloc.vim

" based on:
"    http://vim.1045645.n5.nabble.com/editing-Python-files-how-to-keep-track-of-class-membership-td1189290.html

function! s:get_last_python_class()
    let l:retval = ""
    let l:last_line_declaring_a_class = search('^\s*class', 'bnW')
    let l:last_line_starting_with_a_word_other_than_class = search('^\ \(\<\)\@=\(class\)\@!', 'bnW')
    if l:last_line_starting_with_a_word_other_than_class < l:last_line_declaring_a_class
        let l:nameline = getline(l:last_line_declaring_a_class)
        let l:classend = matchend(l:nameline, '\s*class\s\+')
        let l:classnameend = matchend(l:nameline, '\s*class\s\+[A-Za-z0-9_]\+')
        let l:retval = strpart(l:nameline, l:classend, l:classnameend-l:classend)
    endif
    return l:retval
endfunction

function! s:get_last_python_def()
    let l:retval = ""
    let l:last_line_declaring_a_def = search('^\s*def', 'bnW')
    let l:last_line_starting_with_a_word_other_than_def = search('^\ \(\<\)\@=\(def\)\@!', 'bnW')
    if l:last_line_starting_with_a_word_other_than_def < l:last_line_declaring_a_def
        let l:nameline = getline(l:last_line_declaring_a_def)
        let l:defend = matchend(l:nameline, '\s*def\s\+')
        let l:defnameend = matchend(l:nameline, '\s*def\s\+[A-Za-z0-9_]\+')
        let l:retval = strpart(l:nameline, l:defend, l:defnameend-l:defend)
    endif
    return l:retval
endfunction

function! s:compose_python_location()
    let l:pyloc = s:get_last_python_class()
    if !empty(pyloc)
        let pyloc = pyloc . "."
    endif
    let pyloc = pyloc . s:get_last_python_def()
    return pyloc
endfunction

function! <SID>EchoPythonLocation()
    echo s:compose_python_location()
endfunction

command! PythonLocation :call <SID>EchoPythonLocation()
nnoremap <Leader>? :PythonLocation<CR>