util.py 文件源码

def iter_children_ast(node):
  # Don't attempt to process children of JoinedStr nodes, which we can't fully handle yet.
  if is_joined_str(node):
    return

  for child in ast.iter_child_nodes(node):
    # Skip singleton children; they don't reflect particular positions in the code and break the
    # assumptions about the tree consisting of distinct nodes. Note that collecting classes
    # beforehand and checking them in a set is faster than using isinstance each time.
    if child.__class__ not in SINGLETONS:
      yield child