Error when executing behave_demo.py code

[anjugopinath]

(/s/red/a/nobackup/vision/anju/behave/cvenv) carnap:/s/red/a/nobackup/vision/anju/behave/behave-dataset$ behave_demo.py -s /s/red/a/nobackup/vision/anju/datasets/behave/sequences/Date04_Sub05_boxlong -v /s/red/a/nobackup/vision/anju/behave/behave-dataset/visualize_path -vc
./behave_demo.py: line 5: $'\na simple demo script to show how to load different data given a sequence path\nAuthor: Xianghui\nCite: BEHAVE: Dataset and Method for Tracking Human Object Interaction\n': command not found

^C./behave_demo.py: line 7: syntax error near unexpected token os.getcwd' ./behave_demo.py: line 7: sys.path.append(os.getcwd())'