[AU-4] Working for start with Celerity... Have a problem with a show …

…tasks into flower.

See issues:
mher/flower#895
mher/flower#909
mher/flower#787

aides/python/buy_on_ebay_celery/.gitignore

@@ -0,0 +1,61 @@
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*$py.class
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+*.manifest
+*.spec
+
+# Log files
+pip-log.txt
+pip-delete-this-directory.txt
+*.log
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+.pytest_cache/
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+
+# Translations
+*.mo
+*.pot
+
+# Environment
+.env
+.venv
+env/
+venv/
+ENV/
+
+# If you are using PyCharm
+.idea/
+
+# vscode
+.vscode/settings.json
+
+.env

aides/python/buy_on_ebay_celery/.vscode/settings.default.json

@@ -0,0 +1,51 @@
+{
+  "workbench.colorTheme": "GitHub Dark Default",
+  "workbench.iconTheme": "fira-code-material-minimal",
+  "editor.fontFamily": "fira-code-nerd, FiraCode Nerd Font, Consolas, 'Courier New', monospace",
+  "editor.fontLigatures": true,
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.formatOnSave": true,
+  "editor.unicodeHighlight.allowedLocales": {
+    "ru": true,
+    "uk": true
+  },
+
+  "editor.accessibilitySupport": "off",
+  "explorer.confirmDragAndDrop": false,
+  "redhat.telemetry.enabled": true,
+  "editor.unicodeHighlight.allowedCharacters": {
+    "і": true
+  },
+  "git.openRepositoryInParentFolders": "never",
+
+  "typescript.tsserver.watchOptions": {},
+
+  "[dart]": {
+    "editor.formatOnSave": true,
+    "editor.formatOnType": true,
+    "editor.rulers": [80],
+    "editor.selectionHighlight": false,
+    "editor.suggest.snippetsPreventQuickSuggestions": false,
+    "editor.suggestSelection": "first",
+    "editor.tabCompletion": "onlySnippets",
+    "editor.wordBasedSuggestions": false
+  },
+  "dart.openDevTools": "flutter",
+  "dart.warnWhenEditingFilesOutsideWorkspace": false,
+  "dart.showInspectorNotificationsForWidgetErrors": false,
+  "dart.debugExternalPackageLibraries": true,
+  "dart.debugSdkLibraries": true,
+
+  "[python]": {
+    "editor.formatOnSave": true,
+    "editor.defaultFormatter": "ms-python.black-formatter"
+  },
+
+  "[env]": {
+    "editor.defaultFormatter": "IronGeek.vscode-env"
+  },
+
+  "files.associations": {
+    ".env": "env"
+  }
+}

aides/python/buy_on_ebay_celery/README.md

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+# Buy on eBay
+
+The server for appraise purchase the items on eBay.
+
+Powered by [Celery & FastAPI](https://testdriven.io/courses/fastapi-celery/getting-started/).
+
+## Run
+
+Work into the Bash terminal. In VSCode bottom pane: open `Git Bash`.
+
+Run the commands below in the root foolder.
+
+### Activate the virtual environment
+
+#### Activate on Windows
+
+```cmd
+.\venv\Scripts\activate
+```
+
+#### Linux
+
+### Install requirements
+
+```cmd
+pip install -r requirements.txt
+```
+
+### Install & run Redis
+
+#### Install Redis on Windows
+
+[How do run Redis on Windows?](https://stackoverflow.com/questions/6476945/how-do-i-run-redis-on-windows)
+
+Start Ubuntu and typing:
+
+```cmd
+sudo apt-add-repository ppa:redislabs/redis
+```
+
+```cmd
+sudo apt-get update
+```
+
+```cmd
+sudo apt-get upgrade
+```
+
+```cmd
+sudo apt-get install redis-server
+```
+
+```cmd
+sudo service redis-server restart
+```
+
+Check installation:
+
+```cmd
+set user:1 "Andrii"
+```
+
+```cmd
+get user:1
+```
+
+### Run Redis on Windows
+
+Start Ubuntu.
+
+```cmd
+sudo service redis-server start
+```
+
+### Run Celery server
+
+```cmd
+celery -A main.celery worker --loglevel=info
+```

aides/python/buy_on_ebay_celery/main.py

@@ -0,0 +1,30 @@
+from celery import Celery
+from fastapi import FastAPI
+
+app = FastAPI()
+
+# TIMEZONE = "US/Eastern"
+
+celery = Celery(
+    __name__,
+    broker="redis://127.0.0.1:6379/0",
+    backend="redis://127.0.0.1:6379/0",
+)
+
+# celery.conf.timezone = TIMEZONE
+
+
+@app.get("/")
+def root():
+    return {"message": "Hello World"}
+
+
+@celery.task
+def divide(x, y):
+    import time
+
+    # print(f"{x} / {y} = ...")
+
+    time.sleep(12)
+
+    return x / y

aides/python/buy_on_ebay_celery/requirements.txt

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+fastapi==0.79.0
+uvicorn[standard]==0.18.2
+celery==5.2.7
+redis==4.3.4
+tzdata==2023.3
+flower==1.2.0

aides/python/buy_on_ebay_celery/test.http

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+@hostname = 127.0.0.1
+@port = 8000
+@host = {{hostname}}:{{port}}
+
+###
+
+GET http://{{host}}/
+
+###

aides/python/buy_on_ebay_fastapi/README.md

@@ -1,4 +1,4 @@
-# Buy on eBay FastAPI
+# Buy on eBay
 
 The server for appraise purchase the items on eBay.