title: ImportError: No module named scapy.all
body: <p>I'm running macOS Sierra and Python 2.7.</p>
  
  <p>In my terminal I've installed scapy with:</p>
  
  <pre><code>pip install scapy
  Requirement already satisfied: scapy in /usr/local/lib/python2.7/site-packages
  </code></pre>
  
  <p>But running this:</p>
  
  <pre><code>from scapy.all import *
  
  for pkt in sniff(iface='en0'):
      print pkt
  </code></pre>
  
  <p>Gives me this:</p>
  
  <pre><code>python test.py 
  Traceback (most recent call last):
    File "test.py", line 1, in &lt;module&gt;
      from scapy.all import *
  ImportError: No module named scapy.all
  </code></pre>
  
  <p>I've tried and Google around, and installed <code>pcapy</code> and other packages - but no luck.</p>