ImportError: No module named app

python flask python-import flask-testing

From the comments:

There could have been two issues:

The path to myapplication/ hadn't been added to the $PYTHONPATH environment variable (more info here and here)Let's say the code lives under /home/peg/myapplication/. You need to type in your terminal export PYTHONPATH=${PYTHONPATH}:/home/peg/myapplication/
__init__.py could have had a typo. There shouldn't be whitespaces between the underscores __ and the init.py chunk (__init__.py is good, __ init __.py is not)

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