<s> from __future__ import absolute_import , division , with_statement <EOL> from revolver import command , package <EOL> from revolver . core import run <EOL> def install ( ) : <EOL> package . ensure ( "<STR_LIT>" ) <EOL> if not command . exists ( "<STR_LIT>" ) : <EOL> url = "<STR_LIT>" + "<STR_LIT>" <EOL> run ( "<STR_LIT>" % url ) <EOL> else : <EOL> run ( "<STR_LIT>" ) <EOL> def ensure ( ) : <EOL> if not command . exists ( "<STR_LIT>" ) : <EOL> install ( ) </s>
