the comma version of the except statement is deprecated

[Becker-Asano]

In python 3.3.3 a syntax error is produced by the except statement with a comma. Solution: use "as" instead. (This also causes trouble in pip install command under 3.3.3, see also stackoverflow.com/questions/20517785/python-except-oserror-e-no-longer-working-in-3-3-3)