<s> """<STR_LIT>""" <EOL> from __future__ import print_function , division <EOL> from sympy . polys . domains . domain import Domain <EOL> from sympy . utilities import public <EOL> @ public <EOL> class CharacteristicZero ( Domain ) : <EOL> """<STR_LIT>""" <EOL> has_CharacteristicZero = True <EOL> def characteristic ( self ) : <EOL> """<STR_LIT>""" <EOL> return <NUM_LIT:0> </s>
