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Hi,
my question is on this example:

class MyStr(str):
def hello(self):
print 'Hello !'

s1 = MyStr('My string')
s2 = MyStr('My second string')

s1.hello()
s2.hello()

s = s1 + s2

s.hello()

>>>
Hello !
Hello !
Traceback (most recent call last):
File "<string>", line 204, in run_nodebug
File "<module1>", line 13, in <module>
AttributeError: 'str' object has no attribute 'hello'

How could I get a type MyStr from the 'plus' (__add__) operation
without overriding it in my class ?
I need to override *every* operator I like to use ?

looping wrote:

> Hi,
> my question is on this example:
>
> class MyStr(str):
> def hello(self):
> print 'Hello !'
>
> s1 = MyStr('My string')
> s2 = MyStr('My second string')
>
> s1.hello()
> s2.hello()
>
> s = s1 + s2
>
> s.hello()
>
>>>>
> Hello !
> Hello !
> Traceback (most recent call last):
> File "<string>", line 204, in run_nodebug
> File "<module1>", line 13, in <module>
> AttributeError: 'str' object has no attribute 'hello'
>
> How could I get a type MyStr from the 'plus' (__add__) operation
> without overriding it in my class ?

You can't.
> I need to override *every* operator I like to use ?

Yes.

Diez

looping wrote:
> Hi,
> my question is on this example:
>
> class MyStr(str):
> def hello(self):
> print 'Hello !'
>
> s1 = MyStr('My string')
> s2 = MyStr('My second string')
>
> s1.hello()
> s2.hello()
>
> s = s1 + s2
>
> s.hello()
>
> Hello !
> Hello !
> Traceback (most recent call last):
> File "<string>", line 204, in run_nodebug
> File "<module1>", line 13, in <module>
> AttributeError: 'str' object has no attribute 'hello'
>
> How could I get a type MyStr from the 'plus' (__add__) operation
> without overriding it in my class ?
> I need to override *every* operator I like to use ?
>

You will not need to override if you

s = MyStr(s1 + s2)

James