code: def rename_variable_name(
      context, variables, named_vars, new_names, prefix="Input"
  ):
      # Update ``named_vars`` keys to ``new_names``
      if isinstance(variables, (list, tuple)):
          if new_names is None:
              new_names = [
                  "{}_{}".format(prefix, i)
                  for i in range(len(named_vars))
              ]
          if not isinstance(new_names, (list, tuple)) or len(
              variables
          ) != len(new_names):
              raise ValueError(
                  "Replacing name list is not match with input (or output) "
                  "variables"
              )
          for i, var in enumerate(variables):
              del named_vars[context.get_name(var)]
              new_name = new_names[i]
              named_vars[new_name] = var
              context.set_name(var, new_name, pinned=True)
      elif isinstance(variables, dict):
          if new_names is None:
              new_names = {
                  k: "{}_{}".format(prefix, i)
                  for i, k in enumerate(variables.keys())
              }
          if not isinstance(new_names, (list, tuple, dict)) or len(
              variables
          ) != len(new_names):
              raise ValueError(
                  "Replacing name dict is not match with input (or output) "
                  "variables"
              )
          if isinstance(new_names, (list, tuple)):
              new_names = {
                  k: v for k, v in zip(variables.keys(), new_names)
              }
          for k, v in variables.items():
              if k not in new_names:
                  raise ValueError(
                      "Key of replacing name is not found in variables"
                  )
              del named_vars[context.get_name(v)]
              new_name = new_names[k]
              named_vars[new_name] = v
              context.set_name(v, new_name, pinned=True)
      elif isinstance(variables, chainer.Variable):
          if not new_names:
              new_names = prefix + "_0"
          if isinstance(new_names, (list, tuple)):
              if len(new_names) != 1:
                  raise ValueError("Replacing name must be single")
              new_name = new_names[0]
          elif isinstance(new_names, str):
              new_name = new_names
          else:
              raise ValueError(
                  "Type {} is not supported for single variable".format(
                      type(new_name)
                  )
              )
          del named_vars[context.get_name(variables)]
          named_vars[new_name] = variables
          context.set_name(variables, new_name, pinned=True)
  
file_path: chainer/onnx_chainer/export.py
imports: from __future__ import print_function
  from collections import OrderedDict
  import warnings
  import chainer
label_desc: Use image node_id 3 for calling a global function with example usage: rename_variable_name(context, variables, named_vars, new_names, prefix) without return types