title: how to import my module into python console?
body: <p>In my DigitalOcean droplet,i have installed my python3 this way:  </p>
  
  <pre><code>sudo apt-get install make gcc  
  wget https://www.python.org/ftp/python/3.4.0/Python-3.4.0.tgz  
  tar xf Python-3.4.0.tgz -C /usr/local/src/  
  cd /usr/local/src/Python-3.4.0/  
  ./configure --prefix=/usr/local/python3.4  
  make  
  make install  
  ln -s /usr/local/python3.4/bin/python3.4 /usr/bin/python3  
  </code></pre>
  
  <p>when i upload a python file named down.py into the position with putty:  </p>
  
  <pre><code>/usr/local/python3.4/lib/python3.4/down.py  
  </code></pre>
  
  <p>why can't import the module with command:</p>
  
  <pre><code>import down
  </code></pre>
  
  <p>or</p>
  
  <pre><code>import down.py
  </code></pre>
  
  <p>or</p>
  
  <pre><code>import /usr/local/python3.4/lib/python3.4/down.py ?
  </code></pre>