code: def load_partition_meta(meta_file):
      """Load partition metadata and do sanity check.
  
      Parameters
      ----------
      meta_file : str
          The path of the partition metadata file.
  
      Returns
      -------
      PartitionMeta
          The partition metadata.
      """
      with open(meta_file) as f:
          try:
              part_meta = PartitionMeta(**(json.load(f)))
          except dt.ValidationError as e:
              raise DGLError(
                  f"Invalid partition metadata JSON. Error details: {e.json()}"
              )
          if part_meta.version != "1.0.0":
              raise DGLError(
                  f"Invalid version[{part_meta.version}]. Supported versions: '1.0.0'"
              )
          if part_meta.num_parts <= 0:
              raise DGLError(
                  f"num_parts[{part_meta.num_parts}] should be greater than 0."
              )
          if part_meta.algo_name not in ["random", "metis"]:
              raise DGLError(
                  f"algo_name[{part_meta.num_parts}] is not supported."
              )
          return part_meta
  
file_path: dgl/tools/partition_algo/base.py
imports: import json
  from typing import Optional
  import pydantic
  from dgl import DGLError
label_desc: Use image node_id 2 for calling a global function with example usage: load_partition_meta(meta_file) and returns: part_meta