code: def make_set_closure_cell():
      
      if PYPY:  # pragma: no cover
  
          def set_closure_cell(cell, value):
              cell.__setstate__((value,))
  
      else:
          try:
              ctypes = import_ctypes()
  
              set_closure_cell = ctypes.pythonapi.PyCell_Set
              set_closure_cell.argtypes = (ctypes.py_object, ctypes.py_object)
              set_closure_cell.restype = ctypes.c_int
          except Exception:
              # We try best effort to set the cell, but sometimes it's not
              # possible.  For example on Jython or on GAE.
              set_closure_cell = just_warn
      return set_closure_cell
docs: Moved into a function for testability.