plugin not loaded due to module import errors

[jkall]

version 1.5.5b postgis branch

Plugin fails to start on some machines, but not all, with python error as below. I suspect that the inconsistent module imports may work/fail on various machines due to the local python environment (python paths).

from gui.utils.py:

from date_utils import datestring_to_date
from midvatten_utils import returnunicode as ru
from tools import db_utils, midvatten_utils as utils
from tools.midvatten_utils import returnunicode as ru

Python error:

Couldn't load plugin midvatten due to an error when calling its classFactory() method

ImportError: cannot import name db_utils

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 306, in startPlugin plugins[packageName] = package.classFactory(iface) File "/home/josef/.qgis2/python/plugins/midvatten/init.py", line 33, in classFactory from midvatten import midvatten File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import mod = _builtin_import(name, globals, locals, fromlist, level) File "/home/josef/.qgis2/python/plugins/midvatten/midvatten.py", line 55, in import midvsettingsdialog File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import mod = _builtin_import(name, globals, locals, fromlist, level) File "/home/josef/.qgis2/python/plugins/midvatten/midvsettingsdialog.py", line 21, in import gui_utils File "/usr/lib/python2.7/dist-packages/qgis/utils.py", line 572, in _import mod = _builtin_import(name, globals, locals, fromlist, level) File "/home/josef/.qgis2/python/plugins/midvatten/tools/gui_utils.py", line 28, in from tools import db_utils, midvatten_utils as utils ImportError: cannot import name db_utils

[HenrikSpa]

Fixed. Try now.

My dev environment adds "tools" when I use the automatic refactoring.