When I execute the detools command, it returns "raise valueerror(invalid value for whence: {whence)"

[zlx1043187107]

  When I execute the detools command "detools create_patch ./bsdiff/a1 ./bsdiff/b1 foo.patch", it  returns( "/usr/local/lib/python3.5/dist-packages/heatshrink2/streams.py, line 132"

" raise valueerror(invalid value for whence: {whence)" SyntaxError: invalid syntax)
I don't know what's wrong。I wish someone can help j to solve this problem, thanks.

[eerimoq]

Only Python 3.6 and later are supported. Looks like you are using Python 3.5. Sorry about that.

[zlx1043187107]

The problem is solved, thank you very much. And I'm so sorry to interrupting you, thank you.