Getting error when ran the example files.

[sam1064max]

./ale_python_test2.py space_invaders.bin
A.L.E: Arcade Learning Environment (version 0.5.1)
[Powered by Stella]
Use -help for help screen.
Warning: couldn't load settings file: ./ale.cfg
Traceback (most recent call last):
File "./ale_python_test2.py", line 19, in
ale.set("random_seed",123)
AttributeError: 'ALEInterface' object has no attribute 'set'

[payal211]

1. • A.L.E: Arcade Learning Environment (version 0.6.0)
2. • [Powered by Stella]
3. • Use -help for help screen.
4. • Warning: couldn't load settings file: ./ale.cfg
5. • Traceback (most recent call last):
6. • File "./ale_python_test1.py", line 20, in
7. • ale.set("random_seed",123)
8. • AttributeError: 'ALEInterface' object has no attribute 'set'

I am getting the same error. Any solution?
Thanks.