Matlab unable to relaod the python module

Hi,

I'm using Matlab R2016b with python 2.7. The first time that I made my python module within my Matlab project folder and tried to run it using py.mymod.myfunc it did work perfectly, but then I changed my python module and the next time I was running my matlab, it was giving me this error:

Undefined variable "py" or class "py.connection.getFromDB"

My Matlab code is:

function [status] = pipeMe()

      [own_path , ~ ,~] =  fileparts(mfilename('fullpath'));
      module_path = fullfile(own_path, '..');
      python_path = py.sys.path;
      if count(python_path , module_path) == 0
          insert (python_path , int32(0) , module_path);
      end  

      final = py.connection.getFromDB();
 end

I tried to use:

module = py.importlib.import_module('connection');
py.reaload(module);

but I got the same error. I highly appreciate it if you could help me with this issue. Thanks.