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Allow replacing a logging.StreamHandler's stream #74707

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Allow replacing a logging.StreamHandler's stream#74707
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3.7 (EOL)end of lifetype-featureA feature request or enhancement

Description

@pitrou
pitrou
opened on May 31, 2017
BPO 30522
Nosy @vsajip, @pitrou, @vstinner
PRs
  • bpo-30522: Implemented a method to allow setting a logging.StreamHand… #2921
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = None
closed_at = <Date 2017-07-30.09:44:33.389>
created_at = <Date 2017-05-31.08:09:10.627>
labels = ['type-feature', '3.7']
title = "Allow replacing a logging.StreamHandler's stream"
updated_at = <Date 2017-07-30.09:44:33.388>
user = 'https://github.com/pitrou'

    bugs.python.org fields:

    activity = <Date 2017-07-30.09:44:33.388>
actor = 'vinay.sajip'
assignee = 'none'
closed = True
closed_date = <Date 2017-07-30.09:44:33.389>
closer = 'vinay.sajip'
components = []
creation = <Date 2017-05-31.08:09:10.627>
creator = 'pitrou'
dependencies = []
files = []
hgrepos = []
issue_num = 30522
keywords = []
message_count = 6.0
messages = ['294820', '294821', '294822', '297957', '297958', '299495']
nosy_count = 3.0
nosy_names = ['vinay.sajip', 'pitrou', 'vstinner']
pr_nums = ['2921']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue30522'
versions = ['Python 3.7']

    Activity

    1. pitrou commented on May 31, 2017

      @pitrou
      pitrou
      on May 31, 2017
      MemberAuthor

      Right now it is probably possible using something like:

          handler.acquire()
    try:
        handler.flush()
        handler.stream = new_stream
    finally:
        handler.release()

      but it would be nice to have an officially-supported method to do that.

      Context: if I reconfigure sys.stderr, I'd like to update all handlers that have a reference to the old sys.stderr.

    2. pitrou
      added
      3.7 (EOL)end of life
      type-featureA feature request or enhancement
      on May 31, 2017

    3. vstinner commented on May 31, 2017

      @vstinner
      vstinner
      on May 31, 2017
      Member

      Which StreamHandler class? Is this issue related to logging? If yes, please mention it in the title ;-)

    4. pitrou commented on May 31, 2017

      @pitrou
      pitrou
      on May 31, 2017
      MemberAuthor

      Oh, yes, sorry. This is about logging.

    5. pitrou
      changed the title [-]Allow replacing a StreamHandler's stream[/-] [+]Allow replacing a logging.StreamHandler's stream[/+] on May 31, 2017

    6. vsajip commented on Jul 8, 2017

      @vsajip
      vsajip
      on Jul 8, 2017
      Member

      How about this as an API?

          def setStream(self, stream):
        """
        Sets the StreamHandler's stream to the specified value,
        if it is different.
          Returns the old stream, if the stream was changed, or None
    if it wasn't.
    """

    7. pitrou commented on Jul 8, 2017

      @pitrou
      pitrou
      on Jul 8, 2017
      MemberAuthor

      Vinay, yes, that sounds fine to me.

    8. vsajip commented on Jul 30, 2017

      @vsajip
      vsajip
      on Jul 30, 2017
      Member

      New changeset 2543f50 by Vinay Sajip in branch 'master':
      bpo-30522: Implemented a method to allow setting a logging.StreamHander's stream. (GH-2921)
      2543f50

    9. vsajip
      closed this as completedon Jul 30, 2017
    10. ezio-melotti
      transferred this issue fromon Apr 10, 2022
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