[Python-3000] PEP 3137 plan of attack

[Thomas Lee]

Guido van Rossum wrote:
>>>       
>>>> - make == and != between PyBytes and PyUnicode return False instead of
>>>> raising TypeError
>>>>
>>>>         
Just thinking about it I'm pretty sure my initial patch is wrong - 
forgive my ignorance. To remove the ambiguity, is it fair to state the 
following?

bytes() == str() -> False instead of raising TypeError
bytes() != str() -> True instead of raising TypeError

I initially read that as "return False whenever any comparison between 
bytes and unicode objects is attempted" ...

> Assuming that PyUnicode_Compare is a three-way comparison (less,
> equal, more), it should raise a TypeError when one of the arguments is
> a PyString or PyBytes.
>
>   
Cool. Should have that sorted out soon. As above:

str8() == str() -> False
str8() != str() -> True

Correct?
>> Is it just me, or do string/bytes comparisons already work?
>>
>>  >>> s = str8('test')
>>  >>> b = b'test'
>>  >>> s == b
>> True
>>  >>> b == s
>> True
>>  >>> s != b
>> False
>>  >>> b != s
>> False
>>     
>
> Seems it's already so. Do they order properly too? (< <= > >=)
>   
Looks like it:

 >>> str8('a') > b'b'
False
 >>> str8('a') < b'b'
True
 >>> str8('a') <= b'b'
True
 >>> str8('a') >= b'b'
False

Cheers,
Tom