On Feb 18, 2010, at 5:28 PM, Stephen Hansen wrote:
On Thu, Feb 18, 2010 at 8:19 AM, Andrey Fedorov
anfedo...@gmail.comwrote:
It seems intuitive to me that the magic methods for overriding the
+, -, , ==, , etc. operators should have no sideffects on their
operands. Also, that == should be
On Fri, Feb 19, 2010 at 2:30 AM, Roald de Vries r...@roalddevries.nl wrote:
On Feb 18, 2010, at 5:28 PM, Stephen Hansen wrote:
On Thu, Feb 18, 2010 at 8:19 AM, Andrey Fedorov
anfedo...@gmail.comwrote:
It seems intuitive to me that the magic methods for overriding the +, -,
, ==, , etc.
Roald de Vries wrote:
On Feb 18, 2010, at 5:28 PM, Stephen Hansen wrote:
On Thu, Feb 18, 2010 at 8:19 AM, Andrey Fedorov
anfedo...@gmail.comwrote:
It seems intuitive to me that the magic methods for overriding the
+, -, , ==, , etc. operators should have no sideffects on their
operands.
It seems intuitive to me that the magic methods for overriding the +, -, ,
==, , etc. operators should have no sideffects on their operands. Also,
that == should be commutative and transitive, that and should be
transitive, and anti-commutative.
Is this intuition written up in a PEP, or assumed
On Thu, Feb 18, 2010 at 8:19 AM, Andrey Fedorov anfedo...@gmail.com wrote:
It seems intuitive to me that the magic methods for overriding the +, -, ,
==, , etc. operators should have no sideffects on their operands. Also,
that == should be commutative and transitive, that and should be
It may be intuitive to you, but its not true, written down anywhere, nor
assumed by the language, and the mathematical meaning of the operators
doesn't matter to Python. Python purposefully does not enforce anything for
these methods.
Right, so neither is anything in PEP-8, but it's still
On Thu, Feb 18, 2010 at 11:19 AM, Andrey Fedorov anfedo...@gmail.com wrote:
It seems intuitive to me that the magic methods for overriding the +, -, ,
==, , etc. operators should have no sideffects on their operands. Also,
that == should be commutative and transitive, that and should be
On 2010-02-18 10:19 AM, Andrey Fedorov wrote:
It seems intuitive to me that the magic methods for overriding the +, -,
, ==, , etc. operators should have no sideffects on their operands.
Also, that == should be commutative and transitive, that and should
be transitive, and anti-commutative.
Andrey Fedorov wrote:
It may be intuitive to you, but its not true, written down
anywhere, nor assumed by the language, and the mathematical
meaning of the operators doesn't matter to Python. Python
purposefully does not enforce anything for these methods.
Right, so neither is
