externally-managed-environment, python pip error

install pip

```ubuntu:bash
# apt install python3-pip
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  build-essential javascript-common libjs-jquery libjs-sphinxdoc
  libjs-underscore libpython3-dev libpython3.11 libpython3.11-dev python3-dev
  python3-pkg-resources python3-setuptools python3-wheel python3.11-dev
Suggested packages:
  apache2 | lighttpd | httpd python-setuptools-doc
The following NEW packages will be installed:
  build-essential javascript-common libjs-jquery libjs-sphinxdoc
  libjs-underscore libpython3-dev libpython3.11 libpython3.11-dev python3-dev
  python3-pip python3-pkg-resources python3-setuptools python3-wheel
  python3.11-dev
0 upgraded, 14 newly installed, 0 to remove and 0 not upgraded.
Need to get 9647 kB of archives.
After this operation, 45.1 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://deb.debian.org/debian bookworm/main arm64 build-essential arm64 12.9 [7704 B]
Get:2 http://deb.debian.org/debian bookworm/main arm64 javascript-common all 11+nmu1 [6260 B]
Get:3 http://deb.debian.org/debian bookworm/main arm64 libjs-jquery all 3.6.1+dfsg+~3.5.14-1 [326 kB]
Get:4 http://deb.debian.org/debian bookworm/main arm64 libjs-underscore all 1.13.4~dfsg+~1.11.4-3 [116 kB]
Get:5 http://deb.debian.org/debian bookworm/main arm64 libjs-sphinxdoc all 5.3.0-4 [130 kB]
Get:6 http://deb.debian.org/debian bookworm/main arm64 libpython3.11 arm64 3.11.2-6 [1841 kB]
Get:7 http://deb.debian.org/debian bookworm/main arm64 libpython3.11-dev arm64 3.11.2-6 [4395 kB]
Get:8 http://deb.debian.org/debian bookworm/main arm64 libpython3-dev arm64 3.11.2-1+b1 [9564 B]
Get:9 http://deb.debian.org/debian bookworm/main arm64 python3.11-dev arm64 3.11.2-6 [617 kB]
Get:10 http://deb.debian.org/debian bookworm/main arm64 python3-dev arm64 3.11.2-1+b1 [26.2 kB]
Get:11 http://deb.debian.org/debian bookworm/main arm64 python3-pkg-resources all 66.1.1-1 [296 kB]
Get:12 http://deb.debian.org/debian bookworm/main arm64 python3-setuptools all 66.1.1-1 [521 kB]
Get:13 http://deb.debian.org/debian bookworm/main arm64 python3-wheel all 0.38.4-2 [30.8 kB]
Get:14 http://deb.debian.org/debian bookworm/main arm64 python3-pip all 23.0.1+dfsg-1 [1325 kB]
Fetched 9647 kB in 1s (8001 kB/s)     
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package build-essential.
(Reading database ... 26548 files and directories currently installed.)
Preparing to unpack .../00-build-essential_12.9_arm64.deb ...
Unpacking build-essential (12.9) ...
Selecting previously unselected package javascript-common.
Preparing to unpack .../01-javascript-common_11+nmu1_all.deb ...
Unpacking javascript-common (11+nmu1) ...
Selecting previously unselected package libjs-jquery.
Preparing to unpack .../02-libjs-jquery_3.6.1+dfsg+~3.5.14-1_all.deb ...
Unpacking libjs-jquery (3.6.1+dfsg+~3.5.14-1) ...
Selecting previously unselected package libjs-underscore.
Preparing to unpack .../03-libjs-underscore_1.13.4~dfsg+~1.11.4-3_all.deb ...
Unpacking libjs-underscore (1.13.4~dfsg+~1.11.4-3) ...
Selecting previously unselected package libjs-sphinxdoc.
Preparing to unpack .../04-libjs-sphinxdoc_5.3.0-4_all.deb ...
Unpacking libjs-sphinxdoc (5.3.0-4) ...
Selecting previously unselected package libpython3.11:arm64.
Preparing to unpack .../05-libpython3.11_3.11.2-6_arm64.deb ...
Unpacking libpython3.11:arm64 (3.11.2-6) ...
Selecting previously unselected package libpython3.11-dev:arm64.
Preparing to unpack .../06-libpython3.11-dev_3.11.2-6_arm64.deb ...
Unpacking libpython3.11-dev:arm64 (3.11.2-6) ...
Selecting previously unselected package libpython3-dev:arm64.
Preparing to unpack .../07-libpython3-dev_3.11.2-1+b1_arm64.deb ...
Unpacking libpython3-dev:arm64 (3.11.2-1+b1) ...
Selecting previously unselected package python3.11-dev.
Preparing to unpack .../08-python3.11-dev_3.11.2-6_arm64.deb ...
Unpacking python3.11-dev (3.11.2-6) ...
Selecting previously unselected package python3-dev.
Preparing to unpack .../09-python3-dev_3.11.2-1+b1_arm64.deb ...
Unpacking python3-dev (3.11.2-1+b1) ...
Selecting previously unselected package python3-pkg-resources.
Preparing to unpack .../10-python3-pkg-resources_66.1.1-1_all.deb ...
Unpacking python3-pkg-resources (66.1.1-1) ...
Selecting previously unselected package python3-setuptools.
Preparing to unpack .../11-python3-setuptools_66.1.1-1_all.deb ...
Unpacking python3-setuptools (66.1.1-1) ...
Selecting previously unselected package python3-wheel.
Preparing to unpack .../12-python3-wheel_0.38.4-2_all.deb ...
Unpacking python3-wheel (0.38.4-2) ...
Selecting previously unselected package python3-pip.
Preparing to unpack .../13-python3-pip_23.0.1+dfsg-1_all.deb ...
Unpacking python3-pip (23.0.1+dfsg-1) ...
Setting up python3-pkg-resources (66.1.1-1) ...
Setting up javascript-common (11+nmu1) ...
Setting up python3-setuptools (66.1.1-1) ...
Setting up libpython3.11:arm64 (3.11.2-6) ...
Setting up python3-wheel (0.38.4-2) ...
Setting up libpython3.11-dev:arm64 (3.11.2-6) ...
Setting up python3-pip (23.0.1+dfsg-1) ...
Setting up build-essential (12.9) ...
Setting up libjs-jquery (3.6.1+dfsg+~3.5.14-1) ...
Setting up libjs-underscore (1.13.4~dfsg+~1.11.4-3) ...
Setting up libpython3-dev:arm64 (3.11.2-1+b1) ...
Setting up python3.11-dev (3.11.2-6) ...
Setting up libjs-sphinxdoc (5.3.0-4) ...
Setting up python3-dev (3.11.2-1+b1) ...
Processing triggers for libc-bin (2.36-9+deb12u3) ...
# pip3 -V
pip 23.0.1 from /usr/lib/python3/dist-packages/pip (python 3.11)
# pip3 install pip --upgrade
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
    
    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.
    
    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.
    
    See /usr/share/doc/python3.11/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.
```

https://stackoverflow.com/questions/75608323/how-do-i-solve-error-externally-managed-environment-every-time-i-use-pip-3

https://stackoverflow.com/questions/75602063/pip-install-r-requirements-txt-is-failing-this-environment-is-externally-mana/75696359#75696359

```
# python3 -m venv .venv
The virtual environment was not created successfully because ensurepip is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

    apt install python3.11-venv

You may need to use sudo with that command.  After installing the python3-venv
package, recreate your virtual environment.

Failing command: /sil-kit/build/.venv/bin/python3

# apt install python3.11-venv
sh: 19: ?apt: not found
# apt install python3.11-venv
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  python3-pip-whl python3-setuptools-whl
The following NEW packages will be installed:
  python3-pip-whl python3-setuptools-whl python3.11-venv
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 2835 kB of archives.
After this operation, 3164 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://deb.debian.org/debian bookworm/main arm64 python3-pip-whl all 23.0.1+dfsg-1 [1717 kB]
Get:2 http://deb.debian.org/debian bookworm/main arm64 python3-setuptools-whl all 66.1.1-1 [1111 kB]
Get:3 http://deb.debian.org/debian bookworm/main arm64 python3.11-venv arm64 3.11.2-6 [5892 B]
Fetched 2835 kB in 1s (2932 kB/s)         
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package python3-pip-whl.
(Reading database ... 27867 files and directories currently installed.)
Preparing to unpack .../python3-pip-whl_23.0.1+dfsg-1_all.deb ...
Unpacking python3-pip-whl (23.0.1+dfsg-1) ...
Selecting previously unselected package python3-setuptools-whl.
Preparing to unpack .../python3-setuptools-whl_66.1.1-1_all.deb ...
Unpacking python3-setuptools-whl (66.1.1-1) ...
Selecting previously unselected package python3.11-venv.
Preparing to unpack .../python3.11-venv_3.11.2-6_arm64.deb ...
Unpacking python3.11-venv (3.11.2-6) ...
Setting up python3-setuptools-whl (66.1.1-1) ...
Setting up python3-pip-whl (23.0.1+dfsg-1) ...
Setting up python3.11-venv (3.11.2-6) ...
# python3 -m venv .venv
# source .venv/bin/activate
```

# 参考資料(reference)
ラズパイに怒られた話【error: externally-managed-environment】
https://qiita.com/kei_tnk/items/f80f552185ce16530133

初めてのPythonで "error: externally-managed-environment" を解決する
https://qiita.com/toiee_kame/items/c3781abb53f385dae4f9

dockerで機械学習書籍・ソースM2:macOS確認中。
https://qiita.com/kaizen_nagoya/items/887fa4a2ce9a7f90ca0f

<この項は書きかけです。順次追記します。>
This article is not completed. I will add some words and/or centences in order.

# Qiita Calendar 2024
2024 参加・主催Calendarと投稿記事一覧 Qiita(248)
https://qiita.com/kaizen_nagoya/items/d80b8fbac2496df7827f

主催Calendar2024分析 Qiita(254)
https://qiita.com/kaizen_nagoya/items/15807336d583076f70bc

Calendar 統計
https://qiita.com/kaizen_nagoya/items/e315558dcea8ee3fe43e

Large Language Model Related Calendar 
https://qiita.com/kaizen_nagoya/items/3beb0bc3fb71e3ae6d66

LLM 関連 Calendar 2024 
https://qiita.com/kaizen_nagoya/items/c36033cf66862d5496fa

LLM コミュニティ参加記録作成予定
https://qiita.com/kaizen_nagoya/items/4840ae09437f1e9df74b

博士論文 Calendar 2024 を開催します。
https://qiita.com/kaizen_nagoya/items/51601357efbcaf1057d0

博士論文(0)関連記事一覧
https://qiita.com/kaizen_nagoya/items/8f223a760e607b705e78

2023 Countdown Calendar 主催・参加一覧
https://qiita.com/kaizen_nagoya/items/c4c2f08ac97f38d08543


# 自己記事一覧
Qiitaで逆リンクを表示しなくなったような気がする。時々、スマフォで表示するとあらわっることがあり、完全に削除したのではなさそう。

４月以降、せっせとリンクリストを作り、統計を取って確率を説明しようとしている。
2025年２月末を目標にしている。

一覧の一覧( The directory of directories of mine.) Qiita(100)
https://qiita.com/kaizen_nagoya/items/7eb0e006543886138f39

仮説（0）一覧（目標100現在40）
https://qiita.com/kaizen_nagoya/items/f000506fe1837b3590df

Qiita(0)Qiita関連記事一覧（自分）
https://qiita.com/kaizen_nagoya/items/58db5fbf036b28e9dfa6

Error一覧 error(0)
https://qiita.com/kaizen_nagoya/items/48b6cbc8d68eae2c42b8

資料集 [あなたもdocker私もdocker一覧] docker(0) 
https://qiita.com/kaizen_nagoya/items/45699eefd62677f69c1d

C++ Support(0)　
https://qiita.com/kaizen_nagoya/items/8720d26f762369a80514

Coding(0) Rules, C, Secure, MISRA and so on
https://qiita.com/kaizen_nagoya/items/400725644a8a0e90fbb0

Ethernet 記事一覧　Ethernet(0)
https://qiita.com/kaizen_nagoya/items/88d35e99f74aefc98794

Wireshark 一覧 wireshark(0)、Ethernet(48) 
https://qiita.com/kaizen_nagoya/items/fbed841f61875c4731d0

線網（Wi-Fi）空中線(antenna)(0) 記事一覧(118/300目標)
https://qiita.com/kaizen_nagoya/items/5e5464ac2b24bd4cd001

一覧：携帯計画者日記（0）
https://qiita.com/kaizen_nagoya/items/005d38c6f55c85570e74

なぜdockerで機械学習するか 書籍・ソース一覧作成中 (目標100)
https://qiita.com/kaizen_nagoya/items/ddd12477544bf5ba85e2

プログラムちょい替え（0）一覧:4件
https://qiita.com/kaizen_nagoya/items/296d87ef4bfd516bc394

言語処理100本ノックをdockerで。python覚えるのに最適。:10+12
https://qiita.com/kaizen_nagoya/items/7e7eb7c543e0c18438c4

Python(0)記事をまとめたい。
https://qiita.com/kaizen_nagoya/items/088c57d70ab6904ebb53

安全（0）安全工学シンポジウムに向けて: 21
https://qiita.com/kaizen_nagoya/items/c5d78f3def8195cb2409

プログラマによる、プログラマのための、統計(0)と確率のプログラミングとその後
https://qiita.com/kaizen_nagoya/items/6e9897eb641268766909

転職(0)一覧
https://qiita.com/kaizen_nagoya/items/f77520d378d33451d6fe

物理記事　上位100
https://qiita.com/kaizen_nagoya/items/66e90fe31fbe3facc6ff

量子(0) 計算機, 量子力学 
https://qiita.com/kaizen_nagoya/items/1cd954cb0eed92879fd4

数学関連記事１００
https://qiita.com/kaizen_nagoya/items/d8dadb49a6397e854c6d

統計(0)一覧
https://qiita.com/kaizen_nagoya/items/80d3b221807e53e88aba

図(0) state, sequence and timing. UML and お絵描き 
https://qiita.com/kaizen_nagoya/items/60440a882146aeee9e8f

品質一覧 
https://qiita.com/kaizen_nagoya/items/2b99b8e9db6d94b2e971

言語・文学記事　１００
https://qiita.com/kaizen_nagoya/items/42d58d5ef7fb53c407d6

医工連携関連記事一覧
https://qiita.com/kaizen_nagoya/items/6ab51c12ba51bc260a82

自動車　記事　１００
https://qiita.com/kaizen_nagoya/items/f7f0b9ab36569ad409c5

通信記事１００
https://qiita.com/kaizen_nagoya/items/1d67de5e1cd207b05ef7

日本語（０）一欄
https://qiita.com/kaizen_nagoya/items/7498dcfa3a9ba7fd1e68

英語(0) 一覧
https://qiita.com/kaizen_nagoya/items/680e3f5cbf9430486c7d

音楽　一覧(0) 
https://qiita.com/kaizen_nagoya/items/b6e5f42bbfe3bbe40f5d

「@kazuo_reve 新人の方によく展開している有益な情報」確認一覧 
https://qiita.com/kaizen_nagoya/items/b9380888d1e5a042646b

鉄道（０）鉄道のシステム考察はてっちゃんがてつだってくれる
https://qiita.com/kaizen_nagoya/items/faa4ea03d91d901a618a

OSEK OS設計の基礎　OSEK(100)
https://qiita.com/kaizen_nagoya/items/7528a22a14242d2d58a3

coding (101) 一覧を作成し始めた。omake:最近のQiitaで表示しない5つの事象
https://qiita.com/kaizen_nagoya/items/20667f09f19598aedb68

官公庁・学校・公的団体（NPOを含む）システムの課題、官（０）
https://qiita.com/kaizen_nagoya/items/04ee6eaf7ec13d3af4c3

「はじめての」シリーズ　 ベクタージャパン　
https://qiita.com/kaizen_nagoya/items/2e41634f6e21a3cf74eb

AUTOSAR(0)Qiita記事一覧, OSEK(75)
https://qiita.com/kaizen_nagoya/items/89c07961b59a8754c869

プログラマが知っていると良い「公序良俗」
https://qiita.com/kaizen_nagoya/items/9fe7c0dfac2fbd77a945

LaTeX(0) 一覧　
https://qiita.com/kaizen_nagoya/items/e3f7dafacab58c499792

自動制御、制御工学一覧（０）
https://qiita.com/kaizen_nagoya/items/7767a4e19a6ae1479e6b

Rust(0) 一覧　
https://qiita.com/kaizen_nagoya/items/5e8bb080ba6ca0281927

# 関連資料
' @kazuo_reve 私が効果を確認した「小川メソッド」
https://qiita.com/kazuo_reve/items/a3ea1d9171deeccc04da

' @kazuo_reve 新人の方によく展開している有益な情報
https://qiita.com/kazuo_reve/items/d1a3f0ee48e24bba38f1

' @kazuo_reve Vモデルについて勘違いしていたと思ったこと
https://qiita.com/kazuo_reve/items/46fddb094563bd9b2e1e

## Engineering Festa 2024前に必読記事一覧
programの本質は計画だ。programは設計だ。
https://qiita.com/kaizen_nagoya/items/c8545a769c246a458c27

登壇直後版 色使い(JIS安全色) Qiita Engineer Festa 2023〜私しか得しないニッチな技術でLT〜 スライド編 0.15
https://qiita.com/kaizen_nagoya/items/f0d3070d839f4f735b2b

プログラマが知っていると良い「公序良俗」
https://qiita.com/kaizen_nagoya/items/9fe7c0dfac2fbd77a945

逆も真：社会人が最初に確かめるとよいこと。OSEK(69)、Ethernet(59)
https://qiita.com/kaizen_nagoya/items/39afe4a728a31b903ddc

統計の嘘。仮説（127）
https://qiita.com/kaizen_nagoya/items/63b48ecf258a3471c51b

連休中の記事数は目標達成した。質向上のために集計。平均が無意味なことを再確認
https://qiita.com/kaizen_nagoya/items/138c543c5e74e380d31d

自分の言葉だけで論理展開できるのが天才なら、文章の引用だけで論理展開できるのが秀才だ。仮説（136）
https://qiita.com/kaizen_nagoya/items/97cf07b9e24f860624dd

参考文献駆動執筆(references driven writing)・デンソークリエイト編
https://qiita.com/kaizen_nagoya/items/b27b3f58b8bf265a5cd1

「何を」よりも「誰を」。１０年後のために今見習いたい人たち
https://qiita.com/kaizen_nagoya/items/8045978b16eb49d572b2

Qiitaの記事に３段階または５段階で到達するための方法
https://qiita.com/kaizen_nagoya/items/6e9298296852325adc5e

出力(output)と呼ばないで。これは状態(state)です。
https://qiita.com/kaizen_nagoya/items/80b8b5913b2748867840

coding (101) 一覧を作成し始めた。omake:最近のQiitaで表示しない5つの事象
https://qiita.com/kaizen_nagoya/items/20667f09f19598aedb68

あなたは「勘違いまとめ」から、勘違いだと言っていることが勘違いだといくつ見つけられますか。人間の間違い(human error(125))の種類と対策
https://qiita.com/kaizen_nagoya/items/ae391b77fffb098b8fb4

プログラマの「プログラムが書ける」思い込みは強みだ。３つの理由。仮説（168）統計と確率(17) , OSEK(79)
https://qiita.com/kaizen_nagoya/items/bc5dd86e414de402ec29

出力(output)と呼ばないで。これは状態(state)です。
https://qiita.com/kaizen_nagoya/items/80b8b5913b2748867840

これからの情報伝達手段の在り方について考えてみよう。炎上と便乗。
https://qiita.com/kaizen_nagoya/items/71a09077ac195214f0db

ISO/IEC JTC1 SC7 Software and System Engineering
https://qiita.com/kaizen_nagoya/items/48b43f0f6976a078d907

アクセシビリティの知見を発信しよう！（再び）
https://qiita.com/kaizen_nagoya/items/03457eb9ee74105ee618

統計論及確率論輪講（再び）
https://qiita.com/kaizen_nagoya/items/590874ccfca988e85ea3

読者の心をグッと惹き寄せる7つの魔法
https://qiita.com/kaizen_nagoya/items/b1b5e89bd5c0a211d862

「@kazuo_reve 新人の方によく展開している有益な情報」確認一覧
https://qiita.com/kaizen_nagoya/items/b9380888d1e5a042646b

ソースコードで議論しよう。日本語で議論するの止めましょう（あるプログラミング技術の議論報告）
https://qiita.com/kaizen_nagoya/items/8b9811c80f3338c6c0b0

脳内コンパイラの3つの危険
https://qiita.com/kaizen_nagoya/items/7025cf2d7bd9f276e382

心理学の本を読むよりはコンパイラ書いた方がよくね。仮説（34）
https://qiita.com/kaizen_nagoya/items/fa715732cc148e48880e

NASAを超えるつもりがあれば読んでください。
https://qiita.com/kaizen_nagoya/items/e81669f9cb53109157f6

データサイエンティストの気づき!「勉強して仕事に役立てない人。大嫌い!!」『それ自分かも?』ってなった!!! 
https://qiita.com/kaizen_nagoya/items/d85830d58d8dd7f71d07

「ぼくの好きな先生」「人がやらないことをやれ」プログラマになるまで。仮説（37）　
https://qiita.com/kaizen_nagoya/items/53e4bded9fe5f724b3c4

なぜ経済学徒を辞め、計算機屋になったか（経済学部入学前・入学後・卒業後対応） 転職(1)  
https://qiita.com/kaizen_nagoya/items/06335a1d24c099733f64    

プログラミング言語教育のXYZ。 仮説（52） 
https://qiita.com/kaizen_nagoya/items/1950c5810fb5c0b07be4

【24卒向け】9ヶ月後に年収１０００万円を目指す。二つの関門と三つの道。
https://qiita.com/kaizen_nagoya/items/fb5bff147193f726ad25

「【25卒向け】Qiita Career Meetup for STUDENT」予習の勧め
https://qiita.com/kaizen_nagoya/items/00eadb8a6e738cb6336f

大学入試不合格でも筆記試験のない大学に入って卒業できる。卒業しなくても博士になれる。
https://qiita.com/kaizen_nagoya/items/74adec99f396d64b5fd5

全世界の不登校の子供たち「博士論文」を書こう。世界子供博士論文遠隔実践中心 安全(99)
https://qiita.com/kaizen_nagoya/items/912d69032c012bcc84f2

小川メソッド　覚え（書きかけ）
https://qiita.com/kaizen_nagoya/items/3593d72eca551742df68

DoCAP（ドゥーキャップ）って何ですか？
https://qiita.com/kaizen_nagoya/items/47e0e6509ab792c43327

views 20,000越え自己記事一覧
https://qiita.com/kaizen_nagoya/items/58e8bd6450957cdecd81

Views１万越え、もうすぐ１万記事一覧 最近いいねをいただいた213記事
https://qiita.com/kaizen_nagoya/items/d2b805717a92459ce853

amazon 殿堂入りNo1レビュアになるまで。仮説(102)
https://qiita.com/kaizen_nagoya/items/83259d18921ce75a91f4

100以上いいねをいただいた記事16選
https://qiita.com/kaizen_nagoya/items/f8d958d9084ffbd15d2a

小川清最終講義、最終講義（再）計画, Ethernet(100) 英語(100) 安全(100)
https://qiita.com/kaizen_nagoya/items/e2df642e3951e35e6a53

＜この記事は個人の過去の経験に基づく個人の感想です。現在所属する組織、業務とは関係がありません。＞
This article is an individual impression based on my individual experience. It has nothing to do with the organization or business to which I currently belong.
### 文書履歴(document history)
ver. 0.10 初稿 20231028
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#### Thank you very much for reading to the last sentence.
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