====== Язык программирования Python ======

===== Виртуальная среда Python =====
  * [[https://blog.sedicomm.com/2021/06/29/chto-takoe-venv-i-virtualenv-v-python-i-kak-ih-ispolzovat/|Что такое venv и virtualenv в Python, и как их использовать]]
  * [[https://packaging.python.org/en/latest/guides/installing-using-pip-and-virtual-environments/|https://packaging.python.org/en/latest/guides/installing-using-pip-and-virtual-environments/]]
  * [[https://www.workroom-productions.com/serving-a-directory-with-flask/|Publishing a Directory with Flask]]
<code>

# apt install python3-venv

$ python3 -m venv ~/venv1

$ source ~/venv1/bin/activate

(venv1) $ which python
(venv1) $ which ansible

(venv1) $ deactivate
</code>

===== Web приложение =====

  * [[https://python.ivan-shamaev.ru/run-install-deploy-flask-web-app-docker-dockerfile-compose/|Создание Web-приложения Flask и деплой с помощью Docker Compose & Dockerfile]]
  * [[https://blog.miguelgrinberg.com/post/running-your-flask-application-over-https|Running Your Flask Application Over HTTPS]]
  * [[https://docs.python.org/3/library/configparser.html|configparser — Configuration file parser]]

  * [[#Виртуальная среда Python]]

<code>
(venv1) :~$ pip install Flask

(venv1) :~$ mkdir -p pywebd/; cd $_

(venv1) :~/pywebd$ cat app.py
</code><code>
from flask import Flask, send_from_directory
import os
import configparser

CONST_VER = "ver1.4"

app = Flask(__name__)

@app.route('/')
def index():
   return send_from_directory(pywebd_doc_root, 'index.html')

@app.route('/<path:path>')
def sendstuff(path):
        print(path)
        return send_from_directory(pywebd_doc_root, path)

if __name__ == "__main__":
    config = configparser.ConfigParser()
    config.read('/etc/pywebd/pywebd.conf')
    pywebd_port = os.environ.get('PYWEBD_PORT',config['default']['Listen'])
    pywebd_doc_root = os.environ.get('PYWEBD_DOC_ROOT',config['default']['DocumentRoot'])
    app.run(ssl_context=('/etc/pywebd/pywebd.crt', '/etc/pywebd/pywebd.key'), debug=True, host='0.0.0.0', port=pywebd_port)
</code><code>
# cat /etc/pywebd/pywebd.conf
</code><code>
[default]
DocumentRoot = /var/www/
Listen = 8443
</code><code>
(venv1) :~/pywebd$ #export PYWEBD_PORT=4443
(venv1) :~/pywebd$ #export PYWEBD_DOC_ROOT=/var/www/html/

(venv1) :~/pywebd$ python app.py

(venv1) :~/pywebd$ pip freeze > requirements.txt
</code>

===== Дополнительные материалы =====

==== Доступ к каталогу по http ====

  * [[https://gist.github.com/SeanPesce/af5f6b7665305b4c45941634ff725b7a|SeanPesce/https_server.py]]

<code>
dir$ python3 -m http.server 80
</code>