mind.py 文件源码

def _init_memory(self):
        """Determine a person's base memory capability, given their parents'."""
        config = self.person.sim.config
        if random.random() < config.memory_heritability:
            takes_after = random.choice([self.person.mother, self.person.father])
            memory = random.normalvariate(takes_after.mind.memory, config.memory_heritability_sd)
        else:
            takes_after = None
            memory = random.normalvariate(config.memory_mean, config.memory_sd)
        if self.person.male:  # Men have slightly worse memory (studies show)
            memory -= config.memory_sex_diff
        if memory > config.memory_cap:
            memory = config.memory_cap
        elif memory < config.memory_floor_at_birth:
            memory = config.memory_floor_at_birth
        feature_object = Feature(value=memory, inherited_from=takes_after)
        return feature_object