Need to correct error message for Bytes checker

[Arfey]

In [19]: t.Bytes().check(b'test') 
Out[19]: b'test'

In [18]: t.Bytes().check('test')
... 
DataError: value is not a string

In my opinion we need to change string to bytes string.

[tyulpan]

But isn't this code handling invalid values, or am I wrong?

trafaret/trafaret/base.py

Line 629 in 0f56dee

self._failure('Value is not bytes', value=value)

[Arfey]

I put to check method string and after that receive error value is not a string.

[tyulpan]

I did the same and got:

In [1]: base.Bytes().check(b'test') 
Out[1]: 'test'

In [2]: base.Bytes().check('test')
... 
DataError: Value is not bytes

But I did import as import trafaret.base as base, because the Bytes class isn't in the __init__.py file. That's why it seems to me that I am doing something wrong.

[Arfey]

import trafaret as t

t.__VERSION__ 
(2, 0, '0-alpha.04')

[Arfey]

if u wanna install alpha version u can use that:

pip install https://github.com/Deepwalker/trafaret/archive/version2.zip

[tyulpan]

Yep, DataError: value is not a string 😄

[Arfey]

thx :)