On 02/08/2018 08:20, Steven D'Aprano wrote:
On Wed, 01 Aug 2018 22:14:54 +0300, Serhiy Storchaka wrote:
...
Not always. If your code supported Python 2 in the past, or third-party
dependencies supports or supported Python 2, this warning can expose a
real bug. Even if all your and thir
On 01/08/2018 18:19, Peter Otten wrote:
I've looked into the actual code which has
# paraparser.py
f = isPy3 and asBytes or asUnicode
K = list(known_entities.keys())
for k in K:
known_entities[f(k)] = known_entities[k]
It looks like known_entities starts out with the default stri
On Wed, 01 Aug 2018 22:14:54 +0300, Serhiy Storchaka wrote:
> 01.08.18 21:03, Chris Angelico пише:
>> And in any code that does not and cannot run on Python 2, the warning
>> about bytes and text comparing unequal is nothing more than a false
>> positive.
>
> Not always. If your code supported Py
On Wed, 01 Aug 2018 19:00:27 +0100, Paul Moore wrote:
[...]
> My point was that it's a *warning*, and as such it's perfectly possible
> for a warning to *not* need addressing (other than to suppress or ignore
> it once you're happy that doing so is the right approach).
And my point was that ignor
01.08.18 21:03, Chris Angelico пише:
And in any code that does not and cannot run on Python
2, the warning about bytes and text comparing unequal is nothing more
than a false positive.
Not always. If your code supported Python 2 in the past, or third-party
dependencies supports or supported Py
On Thu, Aug 2, 2018 at 3:37 AM, Steven D'Aprano
wrote:
> In another post, Chris says:
>
> I suspect that there may be a bit of non-thinking-C-mentality
> creeping in: "if I can turn on warnings, I should, and any
> warning is a problem". That simply isn't the case in Python.
>
> I stro
On Wed, 1 Aug 2018 at 18:43, Steven D'Aprano
wrote:
>
> On Wed, 01 Aug 2018 16:22:16 +0100, Paul Moore wrote:
>
> > If they've reported to you that your code produces warnings under -b,
> > your response can quite reasonably be "thanks for the information, we've
> > reviewed our bytes/string handl
On Wed, 01 Aug 2018 16:22:16 +0100, Paul Moore wrote:
> On Wed, 1 Aug 2018 at 16:10, Robin Becker wrote:
>>
>> On 01/08/2018 14:38, Chris Angelico wrote:
>> > t's a warning designed to help people port code from Py2 to Py3. It's
>> > not meant to catch every possible comparison. Unless you are ac
Paul Moore wrote:
> On Wed, 1 Aug 2018 at 16:10, Robin Becker wrote:
>>
>> On 01/08/2018 14:38, Chris Angelico wrote:
>> > t's a warning designed to help people port code from Py2 to Py3. It's
>> > not meant to catch every possible comparison. Unless you are actually
>> > porting Py2 code and are
On Thu, Aug 2, 2018 at 1:22 AM, Paul Moore wrote:
> On Wed, 1 Aug 2018 at 16:10, Robin Becker wrote:
>>
>> On 01/08/2018 14:38, Chris Angelico wrote:
>> > t's a warning designed to help people port code from Py2 to Py3. It's
>> > not meant to catch every possible comparison. Unless you are actual
On Wed, 1 Aug 2018 at 16:10, Robin Becker wrote:
>
> On 01/08/2018 14:38, Chris Angelico wrote:
> > t's a warning designed to help people port code from Py2 to Py3. It's
> > not meant to catch every possible comparison. Unless you are actually
> > porting Py2 code and are worried that you'll be ac
On 01/08/2018 14:38, Chris Angelico wrote:
t's a warning designed to help people port code from Py2 to Py3. It's
not meant to catch every possible comparison. Unless you are actually
porting Py2 code and are worried that you'll be accidentally comparing
bytes and text, just*don't use the -b switc
On Wed, Aug 1, 2018 at 11:25 PM, Robin Becker wrote:
> messing with bytes I discover that this doesn't warn with python -b
>
>
> if __name__=='__main__':
> class nbytes(bytes):
> def __eq__(self,other):
> return bytes.__eq__(self,other) if isinstanc
messing with bytes I discover that this doesn't warn with python -b
if __name__=='__main__':
class nbytes(bytes):
def __eq__(self,other):
return bytes.__eq__(self,other) if isinstance(other,bytes) else
False
def __hash__(self):
On Wed, Aug 1, 2018 at 9:56 PM, Richard Damon wrote:
>> it says explicitly that numeric keys will use numeric comparison, but
>> no mention is made of strings/bytes etc etc and there's an implication
>> that object identity is used rather than comparison. In python 3.x
>> b'a' is not the same as '
On 8/1/18 4:36 AM, Robin Becker wrote:
> On 31/07/2018 16:52, Chris Angelico wrote:
>> On Wed, Aug 1, 2018 at 1:28 AM, MRAB wrote:
>>> On 2018-07-31 08:40, Robin Becker wrote:
A bitbucket user complains that python 3.6.6 with -Wall -b prints
warnings
> .
>>> The warning
..
Nope, that would be the effect of "and", not "or".
"a" is b"b" and "fallback"
False
"a" is b"b" or "fallback"
'fallback'
You seem to be caught in your wrong mental model. I recommend that you let
the matter rest for a day or so, and then look at it with a fresh eye.
..
my b
On Wed, Aug 1, 2018 at 7:43 PM, Robin Becker wrote:
> On 01/08/2018 09:52, Chris Angelico wrote:
>>
>> On Wed, Aug 1, 2018 at 6:36 PM, Robin Becker wrote:
>>>
>>> On 31/07/2018 16:52, Chris Angelico wrote:
>>
>> ..
>>>
>>>
>>> it says explicitly that numeric keys will use numeric comparis
Robin Becker wrote:
> On 01/08/2018 09:52, Chris Angelico wrote:
>> On Wed, Aug 1, 2018 at 6:36 PM, Robin Becker wrote:
>>> On 31/07/2018 16:52, Chris Angelico wrote:
>>..
>>>
>>> it says explicitly that numeric keys will use numeric comparison, but no
> .
>>>
>>
>> Technically,
On 01/08/2018 09:52, Chris Angelico wrote:
On Wed, Aug 1, 2018 at 6:36 PM, Robin Becker wrote:
On 31/07/2018 16:52, Chris Angelico wrote:
..
it says explicitly that numeric keys will use numeric comparison, but no
.
Technically, the comparison used is:
a is b or a == b
On Wed, Aug 1, 2018 at 6:36 PM, Robin Becker wrote:
> On 31/07/2018 16:52, Chris Angelico wrote:
>>
>> On Wed, Aug 1, 2018 at 1:28 AM, MRAB wrote:
>>>
>>> On 2018-07-31 08:40, Robin Becker wrote:
A bitbucket user complains that python 3.6.6 with -Wall -b prints
warnings
>
> ..
On 31/07/2018 16:52, Chris Angelico wrote:
On Wed, Aug 1, 2018 at 1:28 AM, MRAB wrote:
On 2018-07-31 08:40, Robin Becker wrote:
A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings
.
The warning looks wrong to be.
In Python 2, u'a' and b'a' would be treate
On Wed, Aug 1, 2018 at 1:28 AM, MRAB wrote:
> On 2018-07-31 08:40, Robin Becker wrote:
>>
>> A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings
>> for some reportlab code; the
>> example boils down to the following
>>
>> ##
>> C:\code\hg-repos\reportlab\tmp>cat tb.p
On 2018-07-31 08:40, Robin Becker wrote:
A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings for
some reportlab code; the
example boils down to the following
##
C:\code\hg-repos\reportlab\tmp>cat tb.py
if __name__=='__main__':
d={'a':1}
d[b'a'] = d['a'
Robin Becker wrote:
> On 31/07/2018 09:16, Paul Moore wrote:
>> On 31 July 2018 at 08:40, Robin Becker wrote:
>>> A bitbucket user complains that python 3.6.6 with -Wall -b prints
>>> warnings for some reportlab code; the
>>> example boils down to the following
>>>
>>> ##
>>> C:\code\hg-r
On 31 July 2018 at 09:32, Robin Becker wrote:
> On 31/07/2018 09:16, Paul Moore wrote:
>>
>> On 31 July 2018 at 08:40, Robin Becker wrote:
>>>
>>> A bitbucket user complains that python 3.6.6 with -Wall -b prints
>>> warnings
>>> for some reportlab code; the
>>> example boils down to the followin
On 31/07/2018 09:16, Paul Moore wrote:
On 31 July 2018 at 08:40, Robin Becker wrote:
A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings
for some reportlab code; the
example boils down to the following
##
C:\code\hg-repos\reportlab\tmp>cat tb.py
if __name__=='__m
On 31 July 2018 at 08:40, Robin Becker wrote:
> A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings
> for some reportlab code; the
> example boils down to the following
>
> ##
> C:\code\hg-repos\reportlab\tmp>cat tb.py
> if __name__=='__main__':
> d={'a':1}
>
A bitbucket user complains that python 3.6.6 with -Wall -b prints warnings for
some reportlab code; the
example boils down to the following
##
C:\code\hg-repos\reportlab\tmp>cat tb.py
if __name__=='__main__':
d={'a':1}
d[b'a'] = d['a']
##
C:\code\hg-repos\reportlab\tmp>
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