ipython notebook can't find python

Question

I had a couple of Python 2 versions under home-brew. Since I was only using ipython notebook, I decided to uninstall all Python 2 instances, which turned out to be a bad idea because now I just get an error when trying start the P ython server.

-bash: /usr/local/bin/ipython: /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory

How do I solve this?

Thanks.

Dessa Simpson · Answer 1 · 2014-07-18T18:53:25.433

1

You need to reinstall Python 2.7 or use ipython3 instead of ipython. If you get a "command not found" error, run this command: export PATH=/Library/Frameworks/Python.framework/Versions/3.2/bin:$PATH then try running ipython3 again.

edited Jul 18 '14 at 18:53

answered Jul 18 '14 at 18:07

Dessa Simpson

1,697
1
15
27

Why can't it run with python3 ? – Richard Berg Jul 18 '14 at 18:09
Because it is set to look for Python 2.7 as shown by bash: /usr/local/bin/ipython: /usr/local/opt/python/bin/ **python2.7** : bad interpreter: No such file or directory – Dessa Simpson Jul 18 '14 at 18:10
I just did a little bit of research and found [here](http://ipython.org/news.html) that iPython does not yet support Python 3. – Dessa Simpson Jul 18 '14 at 18:12
but IPython 2.0 requires Python ≥ 2.7.2 or ≥ 3.3.0. It does not support Python 3.0, 3.1, 3.2, 2.5, or 2.6. - but i have a Python 3.4.1 version installed – Richard Berg Jul 18 '14 at 18:17
can i change the version ipython looks for ? – Richard Berg Jul 18 '14 at 18:18
I just did some more research and found that the info I found was outdated. However, I found this from [here](http://ipython.org/ipython-doc/rel-1.1.0/interactive/reference.html): "For IPython on Python 3, use ipython3 in place of ipython." – Dessa Simpson Jul 18 '14 at 18:20
I am still not sure how to solve this – Richard Berg Jul 18 '14 at 18:32
Instead of running the server with the command ipython, use the command ipython3. – Dessa Simpson Jul 18 '14 at 18:35
i tried but i get -bash: ipython3: command not found – Richard Berg Jul 18 '14 at 18:37
Run this command: `export PATH=/Library/Frameworks/Python.framework/Versions/3.2/bin:$PATH` then try running ipython3 again. – Dessa Simpson Jul 18 '14 at 18:48
nope.. i did not work – Richard Berg Jul 18 '14 at 18:52
Run `sudo find / -iname *ipython3*` and tell me the output. – Dessa Simpson Jul 18 '14 at 18:55

ipython notebook can't find python

1 Answers1