def absolute_positions(self, me_position=None):
if me_position is None:
me_position = NORTH
positions = [None, None, None, None]
positions[me_position] = self.me
positions[rho_of(me_position)] = self.rho
positions[lho_of(me_position)] = self.lho
positions[partner_of(me_position)] = self.partner
return positions
def possible_calls_over(self, history):
if history.is_complete():
return
yield Call('P')
last_non_pass = history.last_non_pass()
caller = history.position_to_call()
if last_non_pass and history.last_to_not_pass() != partner_of(caller):
if last_non_pass.is_contract():
yield Call('X')
elif last_non_pass.is_double():
yield Call('XX')
last_contract = history.last_contract()
for level in range(1, 8):
if last_contract and level < last_contract.level():
continue
for strain in STRAINS:
if last_contract and level == last_contract.level() and strain <= last_contract.strain:
continue
yield self._make_call(level, strain)