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The openanything.py and its functions should now make perfect sense.
There are 5 important features of HTTP web services that every client should support:
- Identifying your application by setting a proper User-Agent.
- Handling permanent redirects properly.
- Supporting Last-Modified date checking to avoid re-downloading data that hasn't changed.
- Supporting ETag hashes to avoid re-downloading data that hasn't changed.
- Supporting gzip compression to reduce bandwidth even when data has changed.
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