code: def replace_as_expression(template, **replacements):
      """Variant of replace that generates expressions, instead of code blocks."""
      replacement = replace(template, **replacements)
      if len(replacement) != 1:
          raise ValueError(
              "single expression expected; for more general templates use replace"
          )
      (node,) = replacement
  
      if isinstance(node, gast.Expr):
          return node.value
      elif isinstance(node, gast.Name):
          return node
  
      raise ValueError(
          "the template is expected to generate an expression or a name node;"
          " instead found %s" % node
      )
  
imports: import ast
  import textwrap
  import gast
  from tensorflow.python.autograph.pyct import anno
  from tensorflow.python.autograph.pyct import ast_util
  from tensorflow.python.autograph.pyct import parser
  from tensorflow.python.autograph.pyct import qual_names
label_desc: Use image node_id 3 for calling a global function with example usage: replace_as_expression(template) and returns: node, node