title: Import function's arguments in OpenERP
body: <p>I'm new to OpenERP and Python, I'm trying to understand the various functions in the py files. There is an import function used in all files generally devided into two parts : the first part seems to refer to Python librairies (called modules ?) like <code>from datetime import datetime</code> or <code>from dateutil.relativedelta import relativedelta</code> but the second part, I don't know what it refers to. </p>
  
  <p>I would like to know what the following functions refer to :</p>
  
  <pre><code>import netsvc
  import pooler
  from osv import fields, osv
  import decimal_precision as dp
  from tools.translate import _
  </code></pre>
  
  <p>What is netsvc, pooler, osv, decimal_precision, tools_translate ? If they are openERP modules, where can I find the code behind them, else what are they ?</p>
  
  <p>I would be grateful to anyone who would be able to explain to me all of them, and any other similar ones if he/she knows of any.</p>