title: Installed Python libraries scipy and matplotlib but can't import
body: <p>I'm using python 3.4.2, and I believe I downloaded it from python.org. I'm running this on a Mac with El Capitan.</p>
  
  <p>I tried downloading scipy using the anaconda's graphic installation interface. After running the installer, I opened IDLE and tried:</p>
  
  <pre><code>&gt;&gt;&gt; import scipy
  </code></pre>
  
  <p>But got the error:</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;pyshell#0&gt;", line 1, in &lt;module&gt;
      import scipy
  ImportError: No module named 'scipy'
  </code></pre>
  
  <p>I tried the same thing with numpy, but got the same error.</p>
  
  <p>I then tried installing matplotlib, but this time I figured I should try using pip on the command line. First I tried:</p>
  
  <pre><code>dhcp-wifi-8021x-155-41-121-77:~ theMAN$ pip install matplotlib
  Requirement already satisfied: matplotlib in 
  ./anaconda/lib/python3.6/site-packages
  Requirement already satisfied: numpy&gt;=1.7.1 in 
  ./anaconda/lib/python3.6/site-packages (from matplotlib)
  Requirement already satisfied: six&gt;=1.10 in 
  ./anaconda/lib/python3.6/site-packages (from matplotlib)
  Requirement already satisfied: python-dateutil in 
  ./anaconda/lib/python3.6/site-packages (from matplotlib)
  Requirement already satisfied: pytz in ./anaconda/lib/python3.6/site-
  packages (from matplotlib)
  Requirement already satisfied: cycler&gt;=0.10 in 
  ./anaconda/lib/python3.6/site-packages (from matplotlib)
  Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,&gt;=1.5.6 
  in ./anaconda/lib/python3.6/site-packages (from matplotlib)
  </code></pre>
  
  <p>But trying to import scipy, numpy, and matplotlib still returned the same errors. I also tried uninstalling and reinstalling scipy with pip, but that didn't change anything.</p>
  
  <p>Are the modules not installing properly? Are they installed but I'm not importing them right?</p>