My QGIS installation has python 2.7 by default. I am not able to update this python 2.7 to an upper version of python ( e.g. python 2.7.11). I searched the web, however, I do not want to make changes without being sure. Is it ok if I install the new python and set the PYTHONPATH environment variable as below:
Edit: I mean to update python 2.7 to 2.7.11 and not 2.11 ( Sorry for the typo). I updated the question.