executing the python script

input $python input_exploit.py
[+] Connecting to pwnable.kr on port 2222: Done
[*] input2@pwnable.kr:
    Distro    Ubuntu 16.04
    OS:       linux
    Arch:     amd64
    Version:  4.10.0
    ASLR:     Enabled
[-] Starting remote process './input' on pwnable.kr: Process creation failed
[!] Could not find a Python2 interpreter on pwnable.kr
    Use ssh.run() instead of ssh.process()
Traceback (most recent call last):
  File "input_exploit.py", line 31, in <module>
    print data.recv()
AttributeError: 'NoneType' object has no attribute 'recv'
input $