remark: I get a similar error from two packages, when experimenting with Python-3.8.0a4 on Windows

````
import asyncio
await asyncio.sleep(0)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\IPython\core\interactiveshell.py in removed_co_newlocals(function)
    139     CO_NEWLOCALS = 0x0002
    140     code = function.__code__
--> 141     new_code = CodeType(
    142         code.co_argcount,
    143         code.co_kwonlyargcount,

TypeError: an integer is required (got type bytes)
````

or else:

````
import cloudpickle
````

````
import cloudpickle
1 0 1 3 19 b'\x87\x00f\x01d\x01d\x02\x84\x08\x01\x00|\x00\x89\x00d\x00S\x00' (None, <code object <lambda> at 0x000001B36B7D49B0, file "C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\cloudpickle\cloudpickle.py", line 107>, '_make_cell_set_template_code.<locals>.inner.<locals>.<lambda>') () ('value',) C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\cloudpickle\cloudpickle.py inner 106 b'\x00\x01\x0c\x01' ('cell',)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-1-316e5ca2d1c8> in <module>
----> 1 import cloudpickle

C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\cloudpickle\__init__.py in <module>
      1 from __future__ import absolute_import
      2 
----> 3 from cloudpickle.cloudpickle import *
      4 
      5 __version__ = '1.0.0'

C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\cloudpickle\cloudpickle.py in <module>
    165 
    166 
--> 167 _cell_set_template_code = _make_cell_set_template_code()
    168 
    169 

C:\WinP\bd38\bu\WPy64-3800a4\python-3.8.0a4.amd64\lib\site-packages\cloudpickle\cloudpickle.py in _make_cell_set_template_code()
    146             co.co_lnotab,
    147             co.co_cellvars)
--> 148         return types.CodeType(
    149             co.co_argcount,
    150             co.co_kwonlyargcount,

TypeError: an integer is required (got type bytes)