bug#13570: 24.2; (python.el) "ValueError: Attempted relative import in non-package" with relative import.

[Oleksandr Gavenko]

In GNU Emacs 24.2.1 (x86_64-pc-linux-gnu, GTK+ Version 3.4.2)
 of 2013-01-21 on trouble, modified by Debian

  # mkdir package
  # cd package

  # cat <<EOF >cmd.py
  from . import lib
  lib.ok()
  EOF

  # cat <<EOF >lib.py
  def ok():
      print('ok')
  EOF

When you open cmd.py and try C-c C-l (python-load-file) you get:

  >>> Traceback (most recent call last):
  Traceback (most recent call last):
    File "/home/user/devel/tmp/package/cmd.py", line 1, in <module>
      from . import lib
  ValueError: Attempted relative import in non-package

With C-c C-c (python-send-string) ever worse: it uses (make-temp-file "py") so
relative import is not possible!!

-- 
Best regards!