A vimL function that finds python interpreter

find_pythoninterp.vim

" Find python interp. If found, return python command; if not found, return ''
function! FindPythonInterp()
    if has('unix')
        let l:searching_list = [
                    \ 'python',
                    \ 'python27',
                    \ 'python26',
                    \ 'python25',
                    \ 'python24',
                    \ '/usr/local/bin/python',
                    \ '/usr/local/bin/python27',
                    \ '/usr/local/bin/python26',
                    \ '/usr/local/bin/python25',
                    \ '/usr/local/bin/python24',
                    \ '/usr/bin/python',
                    \ '/usr/bin/python27',
                    \ '/usr/bin/python26',
                    \ '/usr/bin/python25',
                    \ '/usr/bin/python24']
    elseif has('win32')
        let l:searching_list = [
                    \ 'python',
                    \ 'python27',
                    \ 'python26',
                    \ 'python25',
                    \ 'python24',
                    \ 'C:\Python27\python.exe',
                    \ 'C:\Python26\python.exe',
                    \ 'C:\Python25\python.exe',
                    \ 'C:\Python24\python.exe']
    endif

    for possible_python_interp in l:searching_list
        if executable(possible_python_interp)
            return possible_python_interp
        endif
    endfor

    return ''
endfunction