codecs.StreamReader doesn't pass final=1 to the UTF-8 codec

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
30/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
backend

Research direction

Start with the linked fffd.py and fffd-2.py demonstration scripts, then trace the codecs.StreamReader behavior involved in the UTF-8 case. Done means reproducing the reported behavior and confirming that the final=1 handling is corrected; no repository test file is named in the issue.

Written by the indexing model from the issue text.

Description

stdlib topic-unicode type-bug
BPO 12508
Nosy @malemburg, @vstinner, @ezio-melotti
Files
  • fffd.py
  • fffd-2.py: Demo script. 2+3 portable, added io.open.
    		•

    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 = None
created_at = <Date 2011-07-06.22:45:47.044>
labels = ['3.10', 'type-bug', '3.8', '3.9', 'expert-unicode']
title = "codecs.StreamReader doesn't pass final=1 to the UTF-8 codec"
updated_at = <Date 2020-11-11.19:26:15.934>
user = 'https://bugs.python.org/spatz123'

    bugs.python.org fields:

    activity = <Date 2020-11-11.19:26:15.934>
actor = 'vstinner'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Unicode']
creation = <Date 2011-07-06.22:45:47.044>
creator = 'spatz123'
dependencies = []
files = ['22597', '26013']
hgrepos = []
issue_num = 12508
keywords = []
message_count = 6.0
messages = ['139954', '139956', '139957', '143473', '144373', '144376']
nosy_count = 4.0
nosy_names = ['lemburg', 'vstinner', 'ezio.melotti', 'spatz123']
pr_nums = []
priority = 'high'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue12508'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

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