io and _pyio modules require the _io module

@pitrou

BPO	17984
Nosy	@pitrou, @vstinner, @benjaminp, @alex, @hynek, @serhiy-storchaka

^{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 2013-05-15.19:49:27.725>
labels = ['type-feature', 'expert-IO']
title = 'io and _pyio modules require the _io module'
updated_at = <Date 2014-07-11.14:40:31.288>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2014-07-11.14:40:31.288>
actor = 'vstinner'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['IO']
creation = <Date 2013-05-15.19:49:27.725>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 17984
keywords = []
message_count = 5.0
messages = ['189295', '189296', '189297', '189298', '222752']
nosy_count = 8.0
nosy_names = ['pitrou', 'vstinner', 'benjamin.peterson', 'stutzbach', 'alex', 'hynek', 'piotr.dobrogost', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue17984'
versions = ['Python 3.4']

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io and _pyio modules don't usable without the _io module. In particular when 2.7 build without unicode. Why we have a Python implementation if it can't be used as a fallback when a C implementation is not available?

Well, we at least need some C level _fileio.

I don't see why we need some C level _fileio, the os module has everythign we need.

Patches welcome, of course!

Serhiy implemented the FileIO class in pure Python: see the issue bpo-21859 (patch under review).

pythongh-62184: Remove _pyio import of _io.FileIO

gh-62184: Remove _pyio import of _io.FileIO (gh-134192)

pythongh-62184: Remove _pyio import of _io.FileIO (pythongh-134192)

[3.13] gh-62184: Remove _pyio import of _io.FileIO (gh-134192) (gh-13…

[3.14] gh-62184: Remove _pyio import of _io.FileIO (gh-134192) (gh-13…

pythongh-62184: Remove _pyio import of _io.FileIO (pythongh-134192)

Triage: Can this be closed?

_pyio (Python implementation) still does an import io which unconditionally imports _io (C implementation) so I'd argue still not pep-399 compliant.

pythongh-62184: Remove _pyio import of _io.FileIO (pythongh-134192)

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io and _pyio modules require the _io module #62184

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io and _pyio modules require the _io module #62184

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serhiy-storchaka commented on May 15, 2013

benjaminp commented on May 15, 2013

alex commented on May 15, 2013

benjaminp commented on May 15, 2013

vstinner commented on Jul 11, 2014

StanFromIreland commented on Oct 31, 2025

cmaloney commented on Oct 31, 2025

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