title: How to install pyserial on raspberry pi?
body: <p>I want to install pyserial on raspberry pi. But it error.
  I do like this:</p>
  
  <pre><code>Copy the file into /home/pi
  Double click on pyserial-2.7.tar.gz
  Choose 'Action'
  Choose 'Extract'
  double click on pyserial-2.6.tar0
  Choose 'Action'
  Choose 'Extract'
  Open LXTerminal
  type cd pyserial-2.7
  press Enter
  type sudo python setup.py install
  press Enter
  </code></pre>
  
  <p>But it error like this:</p>
  
  <pre><code>/usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option :'use_2to3'
  warnings.warn(msg)
  running install
  running build
  running build_py
  running build_scripts
  running install_lib
  running install scripts
  changing mode of /urs/local/bin/miniterm.py to 755
  running install_egg_info
  Removing /usr/local/lib/python2.7/dist-packages/pyserial-2.7.egg-info
  writing  /usr/local/lib/python2.7/dist-packages/pyserial-2.7.egg-info
  </code></pre>
  
  <p>What wrong with it? Plese help me fix it. Thanks!</p>