class_docstr: This class provides interface functions for users to get the parallel context,
  such as the global rank, the local rank, the world size, etc. of each device.
  
  Note:
      The parallel_mode used in this class should be concluded in ``ParallelMode``.
      More details about ``ParallelMode`` could be found in
      `parallel_mode <https://github.com/hpcaitech/ColossalAI/blob/main/colossalai/context/parallel_mode.py>`_.
docstr: Checks sanity of the parallel context.
  
  Raises:
      AssertionError: Raises an AssertionError if the world size does not equal to the product
          of data parallel size, pipeline parallel size and tensor parallel size.
docstr_tok: ["Checks","sanity","of","the","parallel","context",".","Raises",":","AssertionError",":","Raises","an","AssertionError","if","the","world","size","does","not","equal","to","the","product","of","data","parallel","size",",","pipeline","parallel","size","and","tensor","parallel","size","."]
code: def check_sanity(self):
      """Checks sanity of the parallel context.
  
      Raises:
          AssertionError: Raises an AssertionError if the world size does not equal to the product
              of data parallel size, pipeline parallel size and tensor parallel size.
      """
      dps = self.data_parallel_size
      pps = self.pipeline_parallel_size
      tps = self.tensor_parallel_size
      ws = self.world_size
      assert ws == dps * pps * tps, (
          f"Expected the world size {ws} to be equal to data"
          f" parallel size ({dps}) * pipeline parallel size "
          f"({pps}) * tensor parallel size ({tps})"
      )
  
imports: import random
  import socket
  from collections import Counter
  from typing import Union
  import numpy
  import torch
  import torch.distributed
  from colossalai.context.config import Config
  from colossalai.context.singleton_meta import SingletonMeta
  from colossalai.legacy.constants import ALLOWED_MODES, INITIALIZER_MAPPING
  from colossalai.legacy.global_variables import tensor_parallel_env
  from colossalai.legacy.registry import DIST_GROUP_INITIALIZER
  from colossalai.logging import get_dist_logger
  from .parallel_mode import ParallelMode
  from .random import add_seed, get_seeds, set_mode
label_desc: Use image node_id 29 for calling the ParallelContext obj's underlying member method code with example usage: obj.check_sanity() without return types