title: Installing development version of a module in python
body: <p>I am trying to install the development version of owlready2; I take the following step;</p>
  
  <ol>
  <li>Extracted the development version downloaded from <a href="https://bitbucket.org/jibalamy/owlready2/downloads/" rel="nofollow noreferrer">https://bitbucket.org/jibalamy/owlready2/downloads/</a></li>
  <li>uninstalled previously installed owlready versions </li>
  <li>went to the extracted directory and did python setup.py develop </li>
  </ol>
  
  <p>but it is giving me the error that No module named owlready2</p>
  
  <p>The code I am trying to run is below;</p>
  
  <pre><code>from owlready2 import * 
  onto = get_ontology("http://myplatform.com/test_sensor_onto") 
  onto.imported_ontologies = [] 
  sosa = get_ontology("file://sosa.owl").load() 
  ssn = get_ontology("file://ssn.owl").load() 
  onto.imported_ontologies.append(sosa) 
  onto.imported_ontologies.append(ssn) 
  sensor = sosa.Sensor("mySensor", namespace = onto) 
  onto.save("test_sensor_onto2.owl")
  </code></pre>
  
  <p>I have also tried to use python setup.py install, but then it gives an error that </p>
  
  <p>sensor =sosa.Sensor("mySensor", namespace = onto) 
  TypeError: 'NoneType' object is not callable</p>
  
  <p>This error is same as for non-development versions of owlready2. I am wondering if I am doing anything wrong while installing the development version or I have to change some settings somewhere? </p>