Not support python version 2.6.6 :(

[lulz]

/home/common_func.py:24: UserWarning: selectors module not available, fallback to select
warnings.warn('selectors module not available, fallback to select')
Traceback (most recent call last):
File "slaver.py", line 396, in
main_slaver()
File "slaver.py", line 359, in main_slaver
args = argparse_slaver()
File "slaver.py", line 311, in argparse_slaver
https://github.com/aploium/shootback""".format(ver=version_info()),
File "/home/tomcat/common_func.py", line 68, in version_info
return "{}.{}.{}-r{}".format(*version)
ValueError: zero length field name in forma