code: def is_docstring(node):
      """Checks if a Python AST node is a docstring"""
      return isinstance(node, ast.Expr) and isinstance(
          node.value, ast.Str
      )
  
file_path: tvm/python/tvm/te/hybrid/utils.py
imports: import ast
  import inspect
  import logging
  import sys
  import numpy
  import tvm.runtime
  from tvm._ffi.base import numeric_types
  from tvm.ir.container import Array
  from tvm.tir import expr
  from tvm.tir import stmt
  from tvm.te.tensor import Tensor
label_desc: Use image node_id 3 for calling a global function with example usage: is_docstring(node) and returns: unknown