can not use pre-built binary

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I am trying to use the pre-built binary for Ubuntu 15.10, sage-7.1-Ubuntu_15.10-x86_64.tar.bz2. I have extracted it with tar -xvf sage-7.1-Ubuntu_15.10-x86_64.tar.bz2. And it creates the folder SageMath. When I try to run ./sage for the first time from the extracted folder I have the result below. Is it normal? What can I do to run sage?

.../SageMath$ ./sage
  File "/home/ste/Downloads/SageMath/relocate-once.py", line 12
    print "relocate-once.py -d <destination>"
                                        ^
SyntaxError: Missing parentheses in call to 'print'
┌────────────────────────────────────────────────────────────────────┐
│ SageMath Version 7.1, Release Date: 2016-03-20                     │
│ Type "notebook()" for the browser-based notebook interface.        │
│ Type "help()" for help.                                            │
└────────────────────────────────────────────────────────────────────┘

ERROR:  The Sage installation tree has moved

from /home/buildbot/slave/binary_pkg/build/source/SageMath/jc4b6yulaujayb9sr94ia88eourzeqip0oidmas391yaj2
  to /home/ste/Downloads/SageMath
...

Solved: I use python 3.5, but apparently, in order to run sage for the first time, you should use python 2.7