%%writefile seems to work differently when running ipython vs ipython notebook for a blank line at the end of a file

[donnemartin]

IPython

If I use the simple snippet below in IPython, which I run from my bash terminal (blank line intentional):

%%writefile foo.py
print('hello world')

I get the expected blank line at the end of the file foo.py which is helpful for some tools and for PEP-8 compliance.

IPython Notebook

If I use the same code in an IPython Notebook cell and run it, I do not get the blank line.

I would have to do the following in a notebook to get the equivalent foo.py (two blank lines intentional):

%%writefile foo.py
hello world

Checking the %%writefile docs didn't turn up an option that might address this.

Environment

I'm running Python 2.7.10 and the following:

$ pip freeze
backports.ssl-match-hostname==3.4.0.2
certifi==2015.4.28
functools32==3.2.3.post1
gnureadline==6.3.3
ipython==3.2.0
Jinja2==2.7.3
jsonschema==2.5.1
MarkupSafe==0.23
matplotlib==1.4.3
mistune==0.6
mock==1.0.1
nose==1.3.7
numpy==1.9.2
pandas==0.16.2
ptyprocess==0.5
Pygments==2.0.2
pyparsing==2.0.3
python-dateutil==2.4.2
pytz==2015.4
pyzmq==14.7.0
scikit-learn==0.16.1
scipy==0.15.1
seaborn==0.6.0
six==1.9.0
sympy==0.7.6
terminado==0.5
tornado==4.2
wheel==0.24.0