已安装Python模块，但不会导入

Question

I recently upgraded to OSX Sierra, and now I can't import any packages in Python. When I run a standard import numpy in the python console (I'm using Pycharm) I get

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/Applications/PyCharm CE.app/Contents/helpers/pydev/pydev_import_hook.py", line 21, in do_import
    module = self._system_import(name, *args, **kwargs)
ImportError: No module named numpy

I think the problem's coming from when I reinstalled my ports when I was migrating macports, according to the instructions here . I'm pretty sure everything was working in python after I'd upgraded to Sierra, but broke once I did this.

My first thought was to reinstall numpy, but when I go to the command line and run pip install numpy , I get

Requirement already satisfied: numpy in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python.

However, running which numpy turns up nothing, which seems weird, since it just told me that numpy's installed, and I can find it on my computer if I use easyfind. Since it might be relevant, which python gives me /opt/local/bin/python .

I've tried a few different fixes, but haven't been able to get anything to work so far. I have a feeling that I'm missing something very basic, but can't figure out what it is. I'm running python 2.7.12 on mac 10.12.1.

Answer 1

In my PyCharm I use virtual environments. An upgrade to Sierra may have, as you suggested, removed the Python port and thus your virtual environment may need to be recreated too.

Answer 2

Not exactly solving the original problem, but I did figure out how to work around it. I just installed python 3.3 (via macports) and set it to be the default python of my computer, and then reinstalled Pycharm (although I probably could have just restored settings to their defaults). Everything seems to be working now, in python 3.3, although I do have to use pip as python3.3 -m pip install rather than the standard pip install .