text: from typing import Callable, TypeVar, List, Tuple
  
  T = TypeVar('T')
  
  def func1(a: str, b: Callable[[int, int], T]) -> T:
      pass
  
  def func2 (a: str) -> "a string":
      return a
  
  i:int = 10
  t: Tuple[str, ...] = ()
  
  def func3 () -> 3 + i:
      return 0
  
  # The type "Callable[[int], int]" given to "id" is not used well.
  # See comments in parseVariable() of parser/python.c the difficulties.
  id: Callable[[int], int] = lambda var1: var1
  id2 = lambda var2: var2
  
  id3: \
      Callable[[int], int] = \
          lambda var3: var3
  