generate.py 文件源码

def with_relative_values_for(self, **kwargs):
        """
        Use relative values for the given set of attributes.

        :param kwargs (attr_name -> function): A mapping of attibute names to functions of a single dictionary argument
            containing all values already set for any given record so far.  Fixed, random, and "extra" values. The 
            function should return the value you wnat to use for the attribute for that record.

        :return: Generate
        """
        ret = copy.copy(self)
        ret.relative_values = copy.copy(ret.relative_values)
        ret.relative_values.append(kwargs)
        return ret