Why can't I install Python-Markdown? I've had some weird issues with my python install recently but I've usually been able to get it working. However I'm running into a really bizarre issue right now where pip is installing things that disappear. Trying to run through this blog post.  

In the terminal:

pip install markdown 


Everything installs correctly. 

python -m markdown testing.md &gt; output.html


It pops out the following error /usr/bin/python: No module named markdown which seems bizarre, since I'm running exactly what the tutorial is telling me. Then when I write python markdown 

When I go to run the command pip install again it spits out the following:

$ pip install markdown
Requirement already satisfied (use --upgrade to upgrade): markdown in /Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages


Any tips on how to troubleshoot this?
I think your copy of Python 3 is not using the executable name "python". Try "python3 -m markdown" and see if that works. If it does, you can symlink python to python3, or just execute python3 when tutorials ask you to run python.