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Update hello-world.md #13

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Update hello-world.md #13

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4 changes: 3 additions & 1 deletion core/hello-world.md
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ Open a new file called `catseverywhere.py` in your workshop directory. This migh
return 'Hello World!'

if __name__ == '__main__':
app.debug = True
app.run()

Let's break it down a little:
Expand All @@ -50,9 +51,10 @@ The `@` is new, it's called a [_decorator_](http://en.wikipedia.org/wiki/Python_
The function itself returns the string "Hello World!". This will be sent to the web browser.

if __name__ == '__main__':
app.debug = True
app.run()

This is Python for "if this script is run directly then start the application".
This is Python for "if this script is run directly then enable debug mode and start the application".

Now you can start running your first website!

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