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Flask project publish update has no effect
Create flask project
Add virtual env, install flask
Publish to Azure Web Site
In app.py, change "Hello World!" to "Hello Updated World!"
Publish again (don't preview)
The web site will load automatically and it will say
Hello World! instead of the expected
Hello Updated World!
Refreshing the page in the browser, and restarting the site using the Azure portal don't help.