How to use the dill.source._wrap function in dill

def run_source(obj):
    _obj = source._wrap(obj)
    assert _obj(1.57) == obj(1.57)
    src = source.getimportable(obj, alias='_f')
    exec(src, globals())
    assert _f(1.57) == obj(1.57)
    name = source.getname(obj)
    assert name == obj.__name__ or src.split("=",1)[0].strip()

def run_source(obj):
    _obj = source._wrap(obj)
    assert _obj(1.57) == obj(1.57)
    src = source.importable(obj, alias='_f')
    # LEEK: for 3.x, locals may not be modified
    # (see https://docs.python.org/3.6/library/functions.html#locals)
    #
    my_locals = locals()
    exec(src, globals(), my_locals)
    assert my_locals["_f"](1.57) == obj(1.57)
    name = source.getname(obj)
    assert name == obj.__name__ or src.split("=",1)[0].strip()

def test_getsource():
  assert getsource(f) == 'f = lambda x: x**2\n'
  assert getsource(g) == 'def g(x): return f(x) - x\n'
  assert getsource(h) == 'def h(x):\n  def g(x): return x\n  return g(x) - x\n'
  assert getname(f) == 'f'
  assert getname(g) == 'g'
  assert getname(h) == 'h'
  assert _wrap(f)(4) == 16
  assert _wrap(g)(4) == 12
  assert _wrap(h)(4) == 0

  assert getname(Foo) == 'Foo'
  assert getname(Bar) == 'Bar'
  assert getsource(Bar) == 'class Bar:\n  pass\n'
  assert getsource(Foo) == 'class Foo(object):\n  def bar(self, x):\n    return x*x+x\n'
  #XXX: add getsource for  _foo, _bar

def test_getsource():
  assert getsource(f) == 'f = lambda x: x**2\n'
  assert getsource(g) == 'def g(x): return f(x) - x\n'
  assert getsource(h) == 'def h(x):\n  def g(x): return x\n  return g(x) - x\n'
  assert getname(f) == 'f'
  assert getname(g) == 'g'
  assert getname(h) == 'h'
  assert _wrap(f)(4) == 16
  assert _wrap(g)(4) == 12
  assert _wrap(h)(4) == 0

  assert getname(Foo) == 'Foo'
  assert getname(Bar) == 'Bar'
  assert getsource(Bar) == 'class Bar:\n  pass\n'
  assert getsource(Foo) == 'class Foo(object):\n  def bar(self, x):\n    return x*x+x\n'
  #XXX: add getsource for  _foo, _bar

def test_getsource():
  assert getsource(f) == 'f = lambda x: x**2\n'
  assert getsource(g) == 'def g(x): return f(x) - x\n'
  assert getsource(h) == 'def h(x):\n  def g(x): return x\n  return g(x) - x\n'
  assert getname(f) == 'f'
  assert getname(g) == 'g'
  assert getname(h) == 'h'
  assert _wrap(f)(4) == 16
  assert _wrap(g)(4) == 12
  assert _wrap(h)(4) == 0

  assert getname(Foo) == 'Foo'
  assert getname(Bar) == 'Bar'
  assert getsource(Bar) == 'class Bar:\n  pass\n'
  assert getsource(Foo) == 'class Foo(object):\n  def bar(self, x):\n    return x*x+x\n'
  #XXX: add getsource for  _foo, _bar