code: def to_str_round(x, decimal=6):
      """Convert an object to str and round float numbers
  
      Parameters
      ----------
      x: Union[str, list, int, float, np.ndarray]
          The input object
      decimal: int
          The precision of decimal fraction
  
      Returns
      -------
      ret: str
          The string format of these objects
      """
      if isinstance(x, str):
          return x
      if isinstance(x, (list, tuple, np.ndarray)):
          return (
              "["
              + ", ".join([to_str_round(y, decimal=decimal) for y in x])
              + "]"
          )
      if isinstance(x, dict):
          return str({k: to_str_round(v) for k, v in x.items()})
      if isinstance(x, int):
          return str(x)
      if isinstance(x, (np.float32, np.float64, float)):
          format_str = f"%.{decimal}f"
          return format_str % x
      raise ValueError(f"Invalid value: {str(x)}\ttype: {type(x)}")
  
imports: from typing import Hashable
  import json
  import signal
  import threading
  import traceback
  import os
  import numpy
  import tvm
  from tvm import rpc
  from tvm.tir import expr
  from tvm.tir.transform import Simplify
  from tvm.ir.transform import Sequential
  from ..te import Tensor, placeholder
label_desc: Use image node_id 16 for calling a global function with example usage: to_str_round(x, decimal) and returns: x, unknown, str, str, unknown