I have Django Version 1.7 and Python Version 2.7.5 - I used pip install simplejson and apt-get install python-simplejson commands to solve this problem but it still shows me this exception. Is there any compatibility issue between Django and Python or what is the solution to get out of this exception: Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_li