[Twisted-Python] Can’t change namespace for the Logger instance

[Glyph Lefkowitz]

> On Jan 20, 2017, at 1:33 AM, Роман Мещеряков <romanmescheryakov at yandex.ru> wrote:
> 
> I expect the text between ‘[‘ and ‘#’ to be ‘ad_hoc’, but it is auto-generated name instead. Am I doing something wrong or this is a bug?

This is indeed a bug!  And a pretty serious one; it's explicitly documented to work otherwise.  Please file it.

The reason that this happens is that the 'namespace' field is filled out by the descriptor (__get__ method) of the `Logger` object when it is bound to `self`.

You can work around this in the meanwhile by changing your example to be like so:


import sys
from twisted.logger import (Logger, textFileLogObserver)

observer = textFileLogObserver(sys.stdout)

class MyClass:
    @property
    def log(self):
        return Logger(namespace="ad_hoc", observer=observer, source=self)

    def __init__(self):
        self.log.info("MyClass.__init__ called!")

    def __del__(self):
        self.log.info("Bye!")

obj = MyClass()

-glyph


-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/twisted-python/attachments/20170120/46db2fc7/attachment-0002.html>