import sys
if sys.stdin.isatty():
# running interactively
print "running interactively"
else:
with open('output','w') as f:
f.write("running in the background!\n")
# press [windows] + [R] (on windows only)
# use the command : cd/the_way_of_your_program
# and now use this command :
py the_name_of_your_program.py
# don't forget to write the extension (py for python)
# at the end of your program name