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16 lines
820 B
Markdown
16 lines
820 B
Markdown
**English** · [Dansk](Lecture-2-URL-Paths-da) · [Bahasa Melayu](Lecture-2-URL-Paths-ms)
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# Lecture 2: URL paths
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Code: `src/higher_lower/presentation/lectures/step_02_url_paths.py`.
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## What we gained
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- A route is a function bound to a URL path with `@app.route`.
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- A variable section such as `/username/<name>` passes the text of the URL to the function.
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- A converter such as `<int:number>` checks the type; other text gives a 404 page.
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- Debug mode reloads the server on every change and shows the Flask debugger with the values of the variables when an error happens.
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- User text in a page must be escaped, so the code uses `escape`.
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