Warning in ptvsd on python 3.8

[huguesv]

Environment data

• PTVSD version: 4.2.8
• OS and version: win10
• Python version (& distribution if applicable, e.g. Anaconda): cpython 3.8.0a3 32-bit
• Using VS Code or Visual Studio: VS

Actual behavior

Warning prints:

c:\users\huvalo\appdata\local\microsoft\visualstudio\16.0_13ce7c9aexp\extensions\microsoft corporation\python\16.0.0\Packages\ptvsd\_vendored\pydevd\_pydevd_bundle\pydevd_resolver.py:158: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if found.get(name) is not 1:

Expected behavior

No warning printed

Steps to reproduce:

1. Start debugging a python console app