from __future__ imports must occur at the beginning of the file

[complexgenome]

git clone https://github.com/medvedevgroup/varmatch.git
cd varmatch
make all

I try to run tool to see help:

./varmatch -h
  File "./varmatch", line 24
    from __future__ import print_function
SyntaxError: from __future__ imports must occur at the beginning of the file

Python 2.7.13

uname -a
Linux hgrcgridlogin 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28) x86_64 GNU/Linux

gcc version 6.3.0 20170516 (Debian 6.3.0-18)

edited:
Following lines from script/vardiff file work in python shell:

from __future__ import print_function
import sys
import textwrap as _textwrap
import argparse
import os