trying to run mr job python script

[iitspratham]

unable to run py file ,RatingsBreakdown.py this file include -- import mrjob.job from MRJob

File "RatingsBreakdown.py", line 1, in
from mrjob.job import MRJob
File "/usr/lib/python2.7/site-packages/mrjob/job.py", line 36, in
from mrjob.conf import combine_dicts
File "/usr/lib/python2.7/site-packages/mrjob/conf.py", line 28, in
import yaml
File "/usr/lib64/python2.7/site-packages/yaml/init.py", line 362
class YAMLObject(metaclass=YAMLObjectMetaclass):