title: Python rpyc can not run a psutil command remotely
body: <p>I'm trying to run a <code>psutil</code> command remotely:</p>
  
  <pre><code>import os, sys, time
  import rpyc
  import psutil
  
  command = """def rpcexecute():
         import psutil
         cpu = psutil.cpu_percent(interval=1)
         return cpu"""
  
  conn = rpyc.classic.connect('192.168.0.100')
  conn.execute(command)
  remote_exec = conn.namespace['rpcexecute']
  result = remote_exec()
  </code></pre>
  
  <p>I've got an error: <code>"ImportError: No module named psutil"</code>, but I have installed <code>psutil</code> in the both (remote and localhost).</p>
  
  <p>When I test using <code>import os</code> for example, it works fine.</p>
  
  <p>Some tip?</p>
  
  <p>Thank you.</p>