I have done the following steps:
1.)git clone https://github.com/mgbellemare/Arcade-Learning-Environment.git
cd Arcade-Learning-Environment
cp makefile.unix makefile
make

2.)export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:<PATH-TO_ARCADE-LEARNING-ENVIRONMENT>/
export LIBRARY_PATH=$LIBRARY_PATH:<PATH-TO_ARCADE-LEARNING-ENVIRONMENT>/
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:<PATH-TO_ARCADE-LEARNING-ENVIRONMENT>/src/

3.git clone https://github.com/bbitmaster/ale_python_interface.git
cd ale_python_interface
python setup.py build
python setup.py install

4.)I get errors when i do "from ale_python_interface import ALEInterface"

I am getting the following error:from: can't read /var/mail/ale_python_interface