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Allow replacing a logging.StreamHandler's stream #74707

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pitrou opened this issue May 31, 2017 · 6 comments
Closed

Allow replacing a logging.StreamHandler's stream #74707

pitrou opened this issue May 31, 2017 · 6 comments
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3.7 (EOL) end of life type-feature A feature request or enhancement

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@pitrou
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pitrou commented 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']
    @pitrou
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    pitrou commented May 31, 2017

    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.

    @pitrou pitrou added 3.7 (EOL) end of life type-feature A feature request or enhancement labels May 31, 2017
    @vstinner
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    Which StreamHandler class? Is this issue related to logging? If yes, please mention it in the title ;-)

    @pitrou
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    pitrou commented May 31, 2017

    Oh, yes, sorry. This is about logging.

    @pitrou pitrou changed the title Allow replacing a StreamHandler's stream Allow replacing a logging.StreamHandler's stream May 31, 2017
    @vsajip
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    vsajip commented Jul 8, 2017

    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.
    """

    @pitrou
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    pitrou commented Jul 8, 2017

    Vinay, yes, that sounds fine to me.

    @vsajip
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    vsajip commented Jul 30, 2017

    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

    @vsajip vsajip closed this as completed Jul 30, 2017
    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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