Python version error while installation

when I do yum, it says

bash: /usr/bin/yum: /usr/bin/python2.62.7: bad interpreter: No such file or directory

my aws instance details are as given below:

Linux ip-72-311-15-127 3.14.27-25.47.amzn1.x86_64 #1 SMP Wed Dec 17 18:36:15 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

/usr/bin/apt-get also not available

/usr/bin/yum is there so I tried

/usr/bin/yum install -u mongodb-org

which gives

bash: /usr/bin/yum: /usr/bin/python2.62.7: bad interpreter: No such file or directory

Any suggestion for this?