code: def is_import(leaf: Leaf) -> bool:
      """Return True if the given leaf starts an import statement."""
      p = leaf.parent
      t = leaf.type
      v = leaf.value
      return bool(
          t == token.NAME
          and (
              (v == "import" and p and p.type == syms.import_name)
              or (v == "from" and p and p.type == syms.import_from)
          )
      )
  
imports: import sys
  from typing import Final, Generic, Iterator, List, Optional, Set, Tuple, TypeVar, Union
  from mypy_extensions import mypyc_attr
  from black.cache import CACHE_DIR
  from black.mode import Mode, Preview
  from black.strings import get_string_prefix, has_triple_quotes
  from blib2to3 import pygram
  from blib2to3.pgen2 import token
  from blib2to3.pytree import NL, Leaf, Node, type_repr
label_desc: Use image node_id 30 for calling a global function with example usage: is_import(leaf) and returns: bool