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new style class

class Test(object):

def execute(self,v) :
return v

def escape(v):
return v

if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')

Why doesn't this new style class work in python 2.5.1 ?

Nov 2 '07 #1
20 1937
gert wrote:
class Test(object):

def execute(self,v) :
return v

def escape(v):
return v

if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')

Why doesn't this new style class work in python 2.5.1 ?
why should it ?
Nov 2 '07 #2
On Nov 2, 12:27 pm, Boris Borcic <bbor...@gmail. comwrote:
gert wrote:
class Test(object):
def execute(self,v) :
return v
def escape(v):
return v
if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
Why doesn't this new style class work in python 2.5.1 ?

why should it ?
I don't know I thought it was supported from 2.2?

Nov 2 '07 #3
On Nov 2, 12:31 pm, gert <gert.cuyk...@g mail.comwrote:
On Nov 2, 12:27 pm, Boris Borcic <bbor...@gmail. comwrote:
gert wrote:
class Test(object):
def execute(self,v) :
return v
def escape(v):
return v
if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
Why doesn't this new style class work in python 2.5.1 ?
why should it ?

I don't know I thought it was supported from 2.2?
oops the code is like this but doesn't work

class Test(object):

def m1(self,v):
return v

def m2(v):
return v

if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')

Nov 2 '07 #4
gert wrote:
On Nov 2, 12:27 pm, Boris Borcic <bbor...@gmail. comwrote:
>gert wrote:
>>class Test(object):
def execute(self,v) :
return v
def escape(v):
return v
if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
Why doesn't this new style class work in python 2.5.1 ?
why should it ?

I don't know I thought it was supported from 2.2?
Look at the error you get.

Repeat: LOOK AT THE ERROR YOU GET!

(Hint: "m1" not in ("execute", "escape"))

Nothing to do with old- or new-style classes.
/W
Nov 2 '07 #5
gert wrote:
On Nov 2, 12:27 pm, Boris Borcic <bbor...@gmail. comwrote:
>gert wrote:
>>class Test(object):
def execute(self,v) :
return v
def escape(v):
return v
if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
Why doesn't this new style class work in python 2.5.1 ?
why should it ?

I don't know I thought it was supported from 2.2?
I don't recall Python supporting non-existent method-calls (such
as m1/m2 when they aren't actually defined) in ANY version of Python.

But once you change that, you'll likely also want to investigate
the classmethod decorator if you want to create class-methods.

-tkc

Nov 2 '07 #6
>>>>"gert" == gert <ge**********@g mail.comwrites:
gertWhy doesn't this new style class work in python 2.5.1 ?

Whether you declare your class as a new style class or an old style
class, your code is completely and utterly broken. Calling non-existing
methods has never been a good way of getting things done. :-)

Martin
Nov 2 '07 #7
gert wrote:
oops the code is like this but doesn't work

class Test(object):

def m1(self,v):
return v

def m2(v):
return v

if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')

Well, what do you think:
In [9]: gert = Test()

In [10]: print gert.m1('1')
....: print Test.m2('2')
....:
1
---------------------------------------------------------------------------
<type 'exceptions.Typ eError' Traceback (most recent call last)

/home/wildemar/<ipython consolein <module>()

<type 'exceptions.Typ eError'>: unbound method m2() must be called with Test instance as first argument (got str instance instead)
(Another hint: look at what m1 has that m2 lacks.)

/W
Nov 2 '07 #8
gert wrote:
[...]
>>>Why doesn't this new style class work in python 2.5.1 ?
why should it ?
I don't know I thought it was supported from 2.2?

oops the code is like this but doesn't work

class Test(object):

def m1(self,v):
return v

def m2(v):
return v

if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
You should put a '@staticmethod' decorator before your m2 method definition
Nov 2 '07 #9
gert wrote:
On Nov 2, 12:27 pm, Boris Borcic <bbor...@gmail. comwrote:
>gert wrote:
>>class Test(object):
def execute(self,v) :
return v
def escape(v):
return v
if __name__ == '__main__':
gert = Test()
print gert.m1('1')
print Test.m2('2')
Why doesn't this new style class work in python 2.5.1 ?
why should it ?

I don't know I thought it was supported from 2.2?
I think what Boris was being exceedingly unhelpful in saying was "why
should it work when you're calling methods that do not exist"

I don't see 'm1' or 'm2' defined for the class 'Test'.

n

Nov 2 '07 #10

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