codeql/python/ql/test/experimental/dataflow/coverage/classes.py

# User-defined methods, both instance methods and class methods, can be called in many non-standard ways
# i.e. differently from simply `c.f()` or `C.f()`. For example, a user-defined `__await__` function on a
# class `C` will be called by the syntactic construct `await c` when `c` is an instance of `C`.
#
# These tests should cover all the class calls that we hope to support.
# It is based on https://docs.python.org/3/reference/datamodel.html, and headings refer there.
#
# Intended sources should be the variable `SOURCE` and intended sinks should be
# arguments to the function `SINK` (see python/ql/test/experimental/dataflow/testConfig.qll).
#
# Functions whose name ends with "_with_local_flow" will also be tested for local flow.
#
# All functions starting with "test_" should run and print `"OK"`.
# This can be checked by running validTest.py.

# These are defined so that we can evaluate the test code.
NONSOURCE = "not a source"
SOURCE = "source"

def is_source(x):
    return x == "source" or x == b"source" or x == 42 or x == 42.0 or x == 42j

def SINK(x):
    if is_source(x):
        print("OK")
    else:
        print("Unexpected flow", x)

def SINK_F(x):
    if is_source(x):
        print("Unexpected flow", x)
    else:
        print("OK")

# Callable types
# These are the types to which the function call operation (see section Calls) can be applied:

# User-defined functions
# A user-defined function object is created by a function definition (see section Function definitions). It should be called with an argument list containing the same number of items as the function's formal parameter list.
def f(a, b):
  return a

SINK(f(SOURCE, 3))

# Instance methods
# An instance method object combines a class, a class instance and any callable object (normally a user-defined function).
class C(object):

    def method(self, x, cls):
        assert cls is self.__class__
        return x

    @classmethod
    def classmethod(cls, x):
        return x

    @staticmethod
    def staticmethod(x):
        return x

    def gen(self, x, count):
      n = count
      while n > 0:
        yield x
        n -= 1

    async def coro(self, x):
      return x

c = C()

# When an instance method object is created by retrieving a user-defined function object from a class via one of its instances, its __self__ attribute is the instance, and the method object is said to be bound. The new method’s __func__ attribute is the original function object.
func_obj = c.method.__func__

# When an instance method object is called, the underlying function (__func__) is called, inserting the class instance (__self__) in front of the argument list. For instance, when C is a class which contains a definition for a function f(), and x is an instance of C, calling x.f(1) is equivalent to calling C.f(x, 1).
SINK(c.method(SOURCE, C))
SINK(C.method(c, SOURCE, C))
SINK(func_obj(c, SOURCE, C))


# When an instance method object is created by retrieving a class method object from a class or instance, its __self__ attribute is the class itself, and its __func__ attribute is the function object underlying the class method.
c_func_obj = C.classmethod.__func__

# When an instance method object is derived from a class method object, the “class instance” stored in __self__ will actually be the class itself, so that calling either x.f(1) or C.f(1) is equivalent to calling f(C,1) where f is the underlying function.
SINK(c.classmethod(SOURCE))
SINK(C.classmethod(SOURCE))
SINK(c_func_obj(C, SOURCE))

# Generator functions
# A function or method which uses the yield statement (see section The yield statement) is called a generator function. Such a function, when called, always returns an iterator object which can be used to execute the body of the function: calling the iterator’s iterator.__next__() method will cause the function to execute until it provides a value using the yield statement. When the function executes a return statement or falls off the end, a StopIteration exception is raised and the iterator will have reached the end of the set of values to be returned.
def gen(x, count):
  n = count
  while n > 0:
    yield x
    n -= 1

iter = gen(SOURCE, 1)
SINK(iter.__next__())
# SINK_F(iter.__next__()) # throws StopIteration, FP

oiter = c.gen(SOURCE, 1)
SINK(oiter.__next__())
# SINK_F(oiter.__next__()) # throws StopIteration, FP

# Coroutine functions
# A function or method which is defined using async def is called a coroutine function. Such a function, when called, returns a coroutine object. It may contain await expressions, as well as async with and async for statements. See also the Coroutine Objects section.
async def coro(x):
  return x

import asyncio
SINK(asyncio.run(coro(SOURCE)))
SINK(asyncio.run(c.coro(SOURCE)))

class A:

  def __await__(self):
    # yield SOURCE  -- see https://groups.google.com/g/dev-python/c/_lrrc-vp9TI?pli=1
    return (yield from asyncio.coroutine(lambda: SOURCE)())

async def agen(x):
  a = A()
  return await a

SINK(asyncio.run(agen(SOURCE)))

# Asynchronous generator functions
# A function or method which is defined using async def and which uses the yield statement is called a asynchronous generator function. Such a function, when called, returns an asynchronous iterator object which can be used in an async for statement to execute the body of the function.

# Calling the asynchronous iterator’s aiterator.__anext__() method will return an awaitable which when awaited will execute until it provides a value using the yield expression. When the function executes an empty return statement or falls off the end, a StopAsyncIteration exception is raised and the asynchronous iterator will have reached the end of the set of values to be yielded.

# Built-in functions
# A built-in function object is a wrapper around a C function. Examples of built-in functions are len() and math.sin() (math is a standard built-in module). The number and type of the arguments are determined by the C function. Special read-only attributes: __doc__ is the function’s documentation string, or None if unavailable; __name__ is the function’s name; __self__ is set to None (but see the next item); __module__ is the name of the module the function was defined in or None if unavailable.

# Built-in methods
# This is really a different disguise of a built-in function, this time containing an object passed to the C function as an implicit extra argument. An example of a built-in method is alist.append(), assuming alist is a list object. In this case, the special read-only attribute __self__ is set to the object denoted by alist.

# Classes
# Classes are callable. These objects normally act as factories for new instances of themselves, but variations are possible for class types that override __new__(). The arguments of the call are passed to __new__() and, in the typical case, to __init__() to initialize the new instance.

# Class Instances
# Instances of arbitrary classes can be made callable by defining a __call__() method in their class.

# If a class sets __iter__() to None, calling iter() on its instances will raise a TypeError (without falling back to __getitem__()).

# 3.3.1. Basic customization

class Customized:

  a = NONSOURCE
  b = NONSOURCE

  def __new__(cls):
    cls.a = SOURCE
    return super().__new__(cls)

  def __init__(self):
    self.b = SOURCE

# testing __new__ and __init__
customized = Customized()
SINK(Customized.a)
SINK_F(Customized.b)
SINK(customized.a)
SINK(customized.b)

def OK():
  print("OK")

# object.__new__(cls[, ...])
class With_new:

  def __new__(cls):
    OK()
    return super().__new__(cls)

def test_new():
  with_new = With_new()

# object.__init__(self[, ...])
class With_init:

  def __init__(self):
    OK()

def test_init():
  with_init = With_init()

# object.__del__(self)
class With_del:

  def __del__(self):
    OK()

def test_del():
  with_del = With_del()
  del with_del

# object.__repr__(self)
class With_repr:

  def __repr__(self):
    OK()
    return "With_repr()"

def test_repr():
  with_repr = With_repr()
  repr(with_repr)

# object.__str__(self)
class With_str:

  def __str__(self):
    OK()
    return "Awesome"

def test_str():
  with_str = With_str()
  str(with_str)

# object.__bytes__(self)
class With_bytes:

  def __bytes__(self):
    OK()
    return b"Awesome"

def test_bytes():
  with_bytes = With_bytes()
  bytes(with_bytes)

# object.__format__(self, format_spec)
class With_format:

  def __format__(self, format_spec):
    OK()
    return "Awesome"

def test_format():
  with_format = With_format()
  format(with_format)

def test_format_str():
  with_format = With_format()
  "{0}".format(with_format)

def test_format_fstr():
  with_format = With_format()
  f"{with_format}"

# object.__lt__(self, other)
class With_lt:

  def __lt__(self, other):
    OK()
    return ""

def test_lt():
  with_lt = With_lt()
  with_lt < with_lt

# object.__le__(self, other)
class With_le:

  def __le__(self, other):
    OK()
    return ""

def test_le():
  with_le = With_le()
  with_le <= with_le

# object.__eq__(self, other)
class With_eq:

  def __eq__(self, other):
    OK()
    return ""

def test_eq():
  with_eq = With_eq()
  with_eq == with_eq

# object.__ne__(self, other)
class With_ne:

  def __ne__(self, other):
    OK()
    return ""

def test_ne():
  with_ne = With_ne()
  with_ne != with_ne

# object.__gt__(self, other)
class With_gt:

  def __gt__(self, other):
    OK()
    return ""

def test_gt():
  with_gt = With_gt()
  with_gt > with_gt

# object.__ge__(self, other)
class With_ge:

  def __ge__(self, other):
    OK()
    return ""

def test_ge():
  with_ge = With_ge()
  with_ge >= with_ge

# object.__hash__(self)
class With_hash:

  def __hash__(self):
    OK()
    return 0

def test_hash():
  with_hash = With_hash()
  hash(with_hash)

def test_hash_set():
  with_hash = With_hash()
  len(set([with_hash]))

def test_hash_frozenset():
  with_hash = With_hash()
  len(frozenset([with_hash]))

def test_hash_dict():
  with_hash = With_hash()
  len(dict({with_hash: 0}))

# object.__bool__(self)
class With_bool:

  def __bool__(self):
    OK()
    return True

def test_bool():
  with_bool = With_bool()
  bool(with_bool)

def test_bool_if():
  with_bool = With_bool()
  if with_bool:
    pass

# 3.3.2. Customizing attribute access
# object.__getattr__(self, name)
class With_getattr:

  def __getattr__(self, name):
    OK()
    return ""

def test_getattr():
  with_getattr = With_getattr()
  with_getattr.foo

# object.__getattribute__(self, name)
class With_getattribute:

  def __getattribute__(self, name):
    OK()
    return ""

def test_getattribute():
  with_getattribute = With_getattribute()
  with_getattribute.foo

# object.__setattr__(self, name, value)
class With_setattr:

  def __setattr__(self, name, value):
    OK()

def test_setattr():
  with_setattr = With_setattr()
  with_setattr.foo = ""

# object.__delattr__(self, name)
class With_delattr:

  def __delattr__(self, name):
    OK()

def test_delattr():
  with_delattr = With_delattr()
  del with_delattr.foo

# object.__dir__(self)
class With_dir:

  def __dir__(self):
    OK()
    return []

def test_dir():
  with_dir = With_dir()
  dir(with_dir)


# 3.3.2.2. Implementing Descriptors
class Owner:
  pass

# object.__get__(self, instance, owner=None)
class With_get:

  def __get__(self, instance, owner=None):
    OK()
    return ""

def test_get():
  with_get = With_get()
  Owner.attr = with_get
  Owner.attr

# object.__set__(self, instance, value)
class With_set:

  def __set__(self, instance, value):
    OK()

def test_set():
  with_set = With_set()
  Owner.attr = with_set
  owner = Owner()
  owner.attr = ""

# object.__delete__(self, instance)
class With_delete:

  def __delete__(self, instance):
    OK()

def test_delete():
  with_delete = With_delete()
  Owner.attr = with_delete
  owner = Owner()
  del owner.attr

# object.__set_name__(self, owner, name)
class With_set_name:

  def __set_name__(self, owner, name):
    OK()

def test_set_name():
  with_set_name = With_set_name()
  type("Owner", (object,), dict(attr=with_set_name))

# 3.3.2.4. __slots__
# object.__slots__
# __weakref__
# __dict__

# 3.3.3. Customizing class creation
# classmethod object.__init_subclass__(cls)

# 3.3.3.1. Metaclasses
# By default, classes are constructed using type(). The class body is executed in a new namespace and the class name is bound locally to the result of type(name, bases, namespace).

# 3.3.3.2. Resolving MRO entries
# __mro_entries__

# 3.3.3.4. Preparing the class namespace
# metaclass.__prepare__(name, bases, **kwds)

# 3.3.4. Customizing instance and subclass checks
# class.__instancecheck__(self, instance)
# class.__subclasscheck__(self, subclass)

# 3.3.5. Emulating generic types
# classmethod object.__class_getitem__(cls, key)

# 3.3.6. Emulating callable objects
# object.__call__(self[, args...])
class With_call:

  def __call__(self):
    OK()

def test_call():
  with_call = With_call()
  with_call()

# 3.3.7. Emulating container types
# object.__len__(self)
class With_len:

  def __len__(self):
    OK()
    return 0

def test_len():
  with_len = With_len()
  len(with_len)

def test_len_bool():
  with_len = With_len()
  bool(with_len)

def test_len_if():
  with_len = With_len()
  if with_len:
    pass

# # object.__length_hint__(self)
# # object.__getitem__(self, key)
# class With_getitem:

#   def __getitem__(self, key):
#     OK()
#     return "" # edit to match type

# def test_getitem():
#   with_getitem = With_getitem()
#   getitem(with_getitem) # edit to effect call

# # object.__setitem__(self, key, value)
# class With_setitem:

#   def __setitem__(self, key, value):
#     OK()
#     return "" # edit to match type

# def test_setitem():
#   with_setitem = With_setitem()
#   setitem(with_setitem) # edit to effect call

# # object.__delitem__(self, key)
# class With_delitem:

#   def __delitem__(self, key):
#     OK()
#     return "" # edit to match type

# def test_delitem():
#   with_delitem = With_delitem()
#   delitem(with_delitem) # edit to effect call

# # object.__missing__(self, key)
# class With_missing:

#   def __missing__(self, key):
#     OK()
#     return "" # edit to match type

# def test_missing():
#   with_missing = With_missing()
#   missing(with_missing) # edit to effect call

# # object.__iter__(self)
# class With_iter:

#   def __iter__(self):
#     OK()
#     return "" # edit to match type

# def test_iter():
#   with_iter = With_iter()
#   iter(with_iter) # edit to effect call

# # object.__reversed__(self)
# class With_reversed:

#   def __reversed__(self):
#     OK()
#     return "" # edit to match type

# def test_reversed():
#   with_reversed = With_reversed()
#   reversed(with_reversed) # edit to effect call

# # object.__contains__(self, item)
# class With_contains:

#   def __contains__(self, item):
#     OK()
#     return "" # edit to match type

# def test_contains():
#   with_contains = With_contains()
#   contains(with_contains) # edit to effect call


# # 3.3.8. Emulating numeric types
# # object.__add__(self, other)
# class With_add:

#   def __add__(self, other):
#     OK()
#     return self

# def test_add():
#   with_add = With_add()
#   with_add + with_add

# # object.__sub__(self, other)
# class With_sub:

#   def __sub__(self, other):
#     OK()
#     return "" # edit to match type

# def test_sub():
#   with_sub = With_sub()
#   sub(with_sub) # edit to effect call

# # object.__mul__(self, other)
# class With_mul:

#   def __mul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_mul():
#   with_mul = With_mul()
#   mul(with_mul) # edit to effect call

# # object.__matmul__(self, other)
# class With_matmul:

#   def __matmul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_matmul():
#   with_matmul = With_matmul()
#   matmul(with_matmul) # edit to effect call

# # object.__truediv__(self, other)
# class With_truediv:

#   def __truediv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_truediv():
#   with_truediv = With_truediv()
#   truediv(with_truediv) # edit to effect call

# # object.__floordiv__(self, other)
# class With_floordiv:

#   def __floordiv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_floordiv():
#   with_floordiv = With_floordiv()
#   floordiv(with_floordiv) # edit to effect call

# # object.__mod__(self, other)
# class With_mod:

#   def __mod__(self, other):
#     OK()
#     return "" # edit to match type

# def test_mod():
#   with_mod = With_mod()
#   mod(with_mod) # edit to effect call

# # object.__divmod__(self, other)
# class With_divmod:

#   def __divmod__(self, other):
#     OK()
#     return "" # edit to match type

# def test_divmod():
#   with_divmod = With_divmod()
#   divmod(with_divmod) # edit to effect call

# # object.__pow__(self, other[, modulo])
# class With_pow:

#   def __pow__(self, other):
#     OK()
#     return "" # edit to match type

# def test_pow():
#   with_pow = With_pow()
#   pow(with_pow) # edit to effect call

# # object.__lshift__(self, other)
# class With_lshift:

#   def __lshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_lshift():
#   with_lshift = With_lshift()
#   lshift(with_lshift) # edit to effect call

# # object.__rshift__(self, other)
# class With_rshift:

#   def __rshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rshift():
#   with_rshift = With_rshift()
#   rshift(with_rshift) # edit to effect call

# # object.__and__(self, other)
# class With_and:

#   def __and__(self, other):
#     OK()
#     return "" # edit to match type

# def test_and():
#   with_and = With_and()
#   with_and & with_and

# # object.__xor__(self, other)
# class With_xor:

#   def __xor__(self, other):
#     OK()
#     return "" # edit to match type

# def test_xor():
#   with_xor = With_xor()
#   xor(with_xor) # edit to effect call

# # object.__or__(self, other)
# class With_or:

#   def __or__(self, other):
#     OK()
#     return "" # edit to match type

# def test_or():
#   with_or = With_or()
#   with_or | with_or

# # object.__radd__(self, other)
# class With_radd:

#   def __radd__(self, other):
#     OK()
#     return "" # edit to match type

# def test_radd():
#   with_radd = With_radd()
#   radd(with_radd) # edit to effect call

# # object.__rsub__(self, other)
# class With_rsub:

#   def __rsub__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rsub():
#   with_rsub = With_rsub()
#   rsub(with_rsub) # edit to effect call

# # object.__rmul__(self, other)
# class With_rmul:

#   def __rmul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rmul():
#   with_rmul = With_rmul()
#   rmul(with_rmul) # edit to effect call

# # object.__rmatmul__(self, other)
# class With_rmatmul:

#   def __rmatmul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rmatmul():
#   with_rmatmul = With_rmatmul()
#   rmatmul(with_rmatmul) # edit to effect call

# # object.__rtruediv__(self, other)
# class With_rtruediv:

#   def __rtruediv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rtruediv():
#   with_rtruediv = With_rtruediv()
#   rtruediv(with_rtruediv) # edit to effect call

# # object.__rfloordiv__(self, other)
# class With_rfloordiv:

#   def __rfloordiv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rfloordiv():
#   with_rfloordiv = With_rfloordiv()
#   rfloordiv(with_rfloordiv) # edit to effect call

# # object.__rmod__(self, other)
# class With_rmod:

#   def __rmod__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rmod():
#   with_rmod = With_rmod()
#   rmod(with_rmod) # edit to effect call

# # object.__rdivmod__(self, other)
# class With_rdivmod:

#   def __rdivmod__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rdivmod():
#   with_rdivmod = With_rdivmod()
#   rdivmod(with_rdivmod) # edit to effect call

# # object.__rpow__(self, other[, modulo])
# class With_rpow:

#   def __rpow__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rpow():
#   with_rpow = With_rpow()
#   rpow(with_rpow) # edit to effect call

# # object.__rlshift__(self, other)
# class With_rlshift:

#   def __rlshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rlshift():
#   with_rlshift = With_rlshift()
#   rlshift(with_rlshift) # edit to effect call

# # object.__rrshift__(self, other)
# class With_rrshift:

#   def __rrshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rrshift():
#   with_rrshift = With_rrshift()
#   rrshift(with_rrshift) # edit to effect call

# # object.__rand__(self, other)
# class With_rand:

#   def __rand__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rand():
#   with_rand = With_rand()
#   rand(with_rand) # edit to effect call

# # object.__rxor__(self, other)
# class With_rxor:

#   def __rxor__(self, other):
#     OK()
#     return "" # edit to match type

# def test_rxor():
#   with_rxor = With_rxor()
#   rxor(with_rxor) # edit to effect call

# # object.__ror__(self, other)
# class With_ror:

#   def __ror__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ror():
#   with_ror = With_ror()
#   ror(with_ror) # edit to effect call

# # object.__iadd__(self, other)
# class With_iadd:

#   def __iadd__(self, other):
#     OK()
#     return "" # edit to match type

# def test_iadd():
#   with_iadd = With_iadd()
#   iadd(with_iadd) # edit to effect call

# # object.__isub__(self, other)
# class With_isub:

#   def __isub__(self, other):
#     OK()
#     return "" # edit to match type

# def test_isub():
#   with_isub = With_isub()
#   isub(with_isub) # edit to effect call

# # object.__imul__(self, other)
# class With_imul:

#   def __imul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_imul():
#   with_imul = With_imul()
#   imul(with_imul) # edit to effect call

# # object.__imatmul__(self, other)
# class With_imatmul:

#   def __imatmul__(self, other):
#     OK()
#     return "" # edit to match type

# def test_imatmul():
#   with_imatmul = With_imatmul()
#   imatmul(with_imatmul) # edit to effect call

# # object.__itruediv__(self, other)
# class With_itruediv:

#   def __itruediv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_itruediv():
#   with_itruediv = With_itruediv()
#   itruediv(with_itruediv) # edit to effect call

# # object.__ifloordiv__(self, other)
# class With_ifloordiv:

#   def __ifloordiv__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ifloordiv():
#   with_ifloordiv = With_ifloordiv()
#   ifloordiv(with_ifloordiv) # edit to effect call

# # object.__imod__(self, other)
# class With_imod:

#   def __imod__(self, other):
#     OK()
#     return "" # edit to match type

# def test_imod():
#   with_imod = With_imod()
#   imod(with_imod) # edit to effect call

# # object.__ipow__(self, other[, modulo])
# class With_ipow:

#   def __ipow__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ipow():
#   with_ipow = With_ipow()
#   ipow(with_ipow) # edit to effect call

# # object.__ilshift__(self, other)
# class With_ilshift:

#   def __ilshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ilshift():
#   with_ilshift = With_ilshift()
#   ilshift(with_ilshift) # edit to effect call

# # object.__irshift__(self, other)
# class With_irshift:

#   def __irshift__(self, other):
#     OK()
#     return "" # edit to match type

# def test_irshift():
#   with_irshift = With_irshift()
#   irshift(with_irshift) # edit to effect call

# # object.__iand__(self, other)
# class With_iand:

#   def __iand__(self, other):
#     OK()
#     return "" # edit to match type

# def test_iand():
#   with_iand = With_iand()
#   iand(with_iand) # edit to effect call

# # object.__ixor__(self, other)
# class With_ixor:

#   def __ixor__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ixor():
#   with_ixor = With_ixor()
#   ixor(with_ixor) # edit to effect call

# # object.__ior__(self, other)
# class With_ior:

#   def __ior__(self, other):
#     OK()
#     return "" # edit to match type

# def test_ior():
#   with_ior = With_ior()
#   ior(with_ior) # edit to effect call

# # object.__neg__(self)
# class With_neg:

#   def __neg__(self):
#     OK()
#     return "" # edit to match type

# def test_neg():
#   with_neg = With_neg()
#   neg(with_neg) # edit to effect call

# # object.__pos__(self)
# class With_pos:

#   def __pos__(self):
#     OK()
#     return "" # edit to match type

# def test_pos():
#   with_pos = With_pos()
#   pos(with_pos) # edit to effect call

# # object.__abs__(self)
# class With_abs:

#   def __abs__(self):
#     OK()
#     return "" # edit to match type

# def test_abs():
#   with_abs = With_abs()
#   abs(with_abs) # edit to effect call

# # object.__invert__(self)
# class With_invert:

#   def __invert__(self):
#     OK()
#     return "" # edit to match type

# def test_invert():
#   with_invert = With_invert()
#   invert(with_invert) # edit to effect call

# # object.__complex__(self)
# class With_complex:

#   def __complex__(self):
#     OK()
#     return "" # edit to match type

# def test_complex():
#   with_complex = With_complex()
#   complex(with_complex) # edit to effect call

# # object.__int__(self)
# class With_int:

#   def __int__(self):
#     OK()
#     return "" # edit to match type

# def test_int():
#   with_int = With_int()
#   int(with_int) # edit to effect call

# # object.__float__(self)
# class With_float:

#   def __float__(self):
#     OK()
#     return "" # edit to match type

# def test_float():
#   with_float = With_float()
#   float(with_float) # edit to effect call

# # object.__index__(self)
# class With_index:

#   def __index__(self):
#     OK()
#     return "" # edit to match type

# def test_index():
#   with_index = With_index()
#   index(with_index) # edit to effect call

# # object.__round__(self[, ndigits])
# class With_round:

#   def __round__(self):
#     OK()
#     return "" # edit to match type

# def test_round():
#   with_round = With_round()
#   round(with_round) # edit to effect call

# # object.__trunc__(self)
# class With_trunc:

#   def __trunc__(self):
#     OK()
#     return "" # edit to match type

# def test_trunc():
#   with_trunc = With_trunc()
#   trunc(with_trunc) # edit to effect call

# # object.__floor__(self)
# class With_floor:

#   def __floor__(self):
#     OK()
#     return "" # edit to match type

# def test_floor():
#   with_floor = With_floor()
#   floor(with_floor) # edit to effect call

# # object.__ceil__(self)
# class With_ceil:

#   def __ceil__(self):
#     OK()
#     return "" # edit to match type

# def test_ceil():
#   with_ceil = With_ceil()
#   ceil(with_ceil) # edit to effect call


# # 3.3.9. With Statement Context Managers
# # object.__enter__(self)
# class With_enter:

#   def __enter__(self):
#     OK()
#     return "" # edit to match type

# def test_enter():
#   with_enter = With_enter()
#   enter(with_enter) # edit to effect call

# # object.__exit__(self, exc_type, exc_value, traceback)
# class With_exit:

#   def __exit__(self, exc_type, exc_value, traceback):
#     OK()
#     return "" # edit to match type

# def test_exit():
#   with_exit = With_exit()
#   exit(with_exit) # edit to effect call


# # 3.4.1. Awaitable Objects
# # object.__await__(self)
# class With_await:

#   def __await__(self):
#     OK()
#     return "" # edit to match type

# async def test_await():
#   with_await = With_await()
#   await(with_await) # edit to effect call


# # 3.4.2. Coroutine Objects
# # coroutine.send(value)
# # coroutine.throw(type[, value[, traceback]])
# # coroutine.close()

# # 3.4.3. Asynchronous Iterators
# # object.__aiter__(self)
# class With_aiter:

#   def __aiter__(self):
#     OK()
#     return "" # edit to match type

# def test_aiter():
#   with_aiter = With_aiter()
#   aiter(with_aiter) # edit to effect call

# # object.__anext__(self)
# class With_anext:

#   def __anext__(self):
#     OK()
#     return "" # edit to match type

# def test_anext():
#   with_anext = With_anext()
#   anext(with_anext) # edit to effect call


# # 3.4.4. Asynchronous Context Managers
# # object.__aenter__(self)
# class With_aenter:

#   def __aenter__(self):
#     OK()
#     return "" # edit to match type

# def test_aenter():
#   with_aenter = With_aenter()
#   aenter(with_aenter) # edit to effect call

# # object.__aexit__(self, exc_type, exc_value, traceback)
# class With_aexit:

#   def __aexit__(self, exc_type, exc_value, traceback):
#     OK()
#     return "" # edit to match type

# def test_aexit():
#   with_aexit = With_aexit()
#   aexit(with_aexit) # edit to effect call