nltk==2.0b9 not supported by

[logan-siyao-peng]

Hi there, I was trying to run the RST parser. However, it seems like that the nltk==2.0b9 version is no more supported by python 2.7.16. The error message is attached below.
Is there a lower version of Python2 that I should be using or maybe another nltk version? Thanks.

python2 -m pip install nltk==2.0b9
Collecting nltk==2.0b9
Using cached https://files.pythonhosted.org/packages/ea/b3/4c5157bf034437905fbbd3c80e58c8b4a22cf3400db0bdf19dae3079a732/nltk-2.0b9.tar.gz
ERROR: Complete output from command python setup.py egg_info:
ERROR: Traceback (most recent call last):
File "", line 1, in
IOError: [Errno 2] No such file or directory: '/private/var/folders/p_/c9k7v3d566384sdny0rnj6xc0000gp/T/pip-install-Lznpp8/nltk/setup.py'
----------------------------------------
ERROR: Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/p_/c9k7v3d566384sdny0rnj6xc0000gp/T/pip-install-Lznpp8/nltk/

[forkheadboxP2]

Did you eventually find a solution to the problem? Trying to use the model for my research as well. Thanks!