class_docstr: Parallel RL learning environments.
class_docstr_tok: ["Parallel","RL","learning","environments","."]
code: def seed(self, seeds):
      raise NotImplementedError()
  
file_path: pfrl/pfrl/env.py
imports: from abc import ABCMeta, abstractmethod
label_desc: Use image node_id 3 for calling the VectorEnv obj's underlying member method code with example usage: obj.seed(seeds) without return types