I am mainly using python for extensive algorithms operations. Now i have my webiste in Django.
I few libraries in c++ and few in Java which i don’t have in python. Or you can say that i already have some c++ , Java files in which some algorithm is coded.
can i call those function or do some calculation in my djnago sites using those c++ or java files
For C++, certainly. Either write a module that wraps the library, or use something like ctypes or SWIG.
For Java, you’d be best to move to Jython (and correspondingly use django-jython).
Note that using both C++ and Java from Python is not trivial.