# Environment variables

In order to access {{root}} and {{uranie}} from Python, we need to ensure that some environment 
variables are properly set:
            
- *\$PYTHONPATH* must contain the *\$ROOTSYS/lib* directory, where *\$ROOTSYS* is {{root}}'s 
installation directory.

- *\$LD_LIBRARY_PATH* must contain the *\$ROOTSYS/lib* directory.