code: def get_py_source(file):
      
      try:
          response = None
          pysource = ""
  
          if regexp_py.search(file) is None:
              response = {"error": "Only Python source files are allowed. (*.py)"}
          else:
              with open(file, 'r') as pyfile:
                  pysource = pyfile.read()
  
              response = {"data": pysource}
  
      except Exception as e:
          response = {"error": str(e)}
      finally:
          return response
docs: Retrieves and returns the source code for any Python
      files requested by the UI via the host agent
  
      @param file [String] The fully qualified path to a file