No attribute 'from_bytes' on Type[int] [attribute-error]

[pjz]

I have a call that looks like:

i = int.from_bytes(h.digest(), byteorder='big')

and it got flagged with

No attribute 'from_bytes' on Type[int] [attribute-error]

which is clearly wrong since:

Python 3.7.4 (default, Sep  3 2019, 12:43:59) 
[GCC 7.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> help(int.from_bytes)
Help on built-in function from_bytes:

from_bytes(bytes, byteorder, *, signed=False) method of builtins.type instance
    Return the integer represented by the given array of bytes.

[rchen152]

I tried running pytype on:

h = __any_object__
i = int.from_bytes(h.digest(), byteorder='big')

and didn't see any errors. from_bytes is new in Python 3 - is it possible that pytype was running in Python 2 mode? Could you give a bit more information about what the surrounding code looks like?

[pjz]

Okay, it did come from mixing versions, but it was because pytype moduledir/ apparently calls out to pytype-single ..., so running pytype in virtualenv directly (eg. doing /path/to/venv/bin/pytype moduledir/) doesn't work because the subsequent call to pytype-single uses the main path.

My bad, though it would be nice if pytype used pytype-single as a library instead of via an exec.

[rchen152]

pytype uses ninja to parallelize the pytype-single calls, so unfortunately, we have to call the binary.