problem in writing a simple service and client(python)

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When I type

rosrun beginner_tutorials add_two_ints_server.py

it displays

from: can't read /var/mail/beginner_tutorials.srv
/home/exbot/catkin_ws/src/beginner_tutorials/scripts/add_two_ints_server.py: line 4: import: command not found
/home/exbot/catkin_ws/src/beginner_tutorials/scripts/add_two_ints_server.py: line 6: syntax error near unexpected token `('
/home/exbot/catkin_ws/src/beginner_tutorials/scripts/add_two_ints_server.py: line 6: ` def handle_add_two_ints(req):'

how can I solve this question.