title: Retrieve the string from ctypes's c_char_p
body: <p>In Python, I have a ctypes.c_char_p's string, 'Hello, world'. It seems that python automatically encodes it to a number (see below from my ipython console). How can I retrieve the string, namely,  'Hello, world', from the ctypes.c_char_p object?</p>
  
  <pre><code>In [45]: from ctypes import c_char_p
  
  In [46]: c_char_p("Hello, World")
  Out[46]: c_char_p(4508383228)
  </code></pre>