Mac : fail to launch Python 3.8

[SebastienFoo]

BPO	39397
Nosy	@ronaldoussoren, @vstinner, @ned-deily, @methane

^{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 2020-01-22.12:46:34.794>
created_at = <Date 2020-01-20.15:57:36.687>
labels = ['OS-mac', '3.8', 'expert-installation', 'invalid']
title = 'Mac : fail to launch Python 3.8'
updated_at = <Date 2020-01-22.12:46:34.793>
user = 'https://bugs.python.org/SebastienFoo'

bugs.python.org fields:

activity = <Date 2020-01-22.12:46:34.793>
actor = 'methane'
assignee = 'none'
closed = True
closed_date = <Date 2020-01-22.12:46:34.794>
closer = 'methane'
components = ['Installation', 'macOS']
creation = <Date 2020-01-20.15:57:36.687>
creator = 'Sebastien Foo'
dependencies = []
files = []
hgrepos = []
issue_num = 39397
keywords = []
message_count = 8.0
messages = ['360322', '360354', '360359', '360364', '360376', '360377', '360387', '360453']
nosy_count = 5.0
nosy_names = ['ronaldoussoren', 'vstinner', 'ned.deily', 'methane', 'Sebastien Foo']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue39397'
versions = ['Python 3.8']

[SebastienFoo]

Hello,
I am facing an issue with python on mac and there is not much information that I can find to fix it.
When I installed the latest cli for Azure (brew upgrade azure-cli) it installed python 3.8
And then the az cli failed and running the python 3.8 failed too with the following error.

/usr/local/Cellar/python@3.8/3.8.1/Frameworks/Python.framework/Versions/3.8/bin/python3.8
Fatal Python error: config_get_locale_encoding: failed to get the locale encoding: nl_langinfo(CODESET) failed
Python runtime state: preinitialized

I have tried to reinstall python and the azure cli without success.

Any help would be much appreciated.

[methane]

Try locale command. What is shown?

[vstinner]

Can you try to dump your environment variables? Try maybe the "env" command.

At least, I would need: LC_ALL, LC_CTYPE and LANG.

[ronaldoussoren]

An additional question: what version of macOS are you using?

[SebastienFoo]

thanks averyone to help me
here are the values you are expecting

locale
LANG="en_US"
LC_COLLATE="en_US"
LC_CTYPE="en_US"
LC_MESSAGES="en_US"
LC_MONETARY="en_US"
LC_NUMERIC="en_US"
LC_TIME="en_US"
LC_ALL=

doing env I get this (no LC_ALL )
LC_TERMINAL_VERSION=3.3.7
ITERM_PROFILE=zsh
XPC_FLAGS=0x0
LANG=en_US
SHELL=/usr/local/bin/zsh
TERM_PROGRAM_VERSION=3.3.7
TERM_PROGRAM=iTerm.app
LC_TERMINAL=iTerm2
LC_CTYPE=en_US

And for the last question I am using Catalina 10.15.2

[methane]

doing env I get this (no LC_ALL )
[snip]
LC_CTYPE=en_US

This is wrong setting. Find where this environment variable is set and remove it.

[ronaldoussoren]

The other locale related settings are off as well, the default system locale ends with ".UTF-8".

[SebastienFoo]

Thanks a lot for you help, my issue is solved.
My ~/.zshrc was having a LANG env var set to

LANG=en_US

I just commented out this line and everything works fine.
I don't know why this was set like that.

Thanks again for your time you can close this ticket.