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1.3 KiB
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# Upgrading pythonwhois
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{>index}(<< back to index)
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Depending on the version, upgrading to a new version of pythonwhois may entail a need for code changes. These are the usual guidelines:
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Major version (x.0.0)::
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Major changes have been made to the API. This will almost certainly require a code change.
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Minor version (0.x.0)::
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Some changes have been made to the API, but these are backwards-compatible. There are probably new features that you're not yet utilizing, but current code will remain functional.
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Patch version (0.0.x)::
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Minor changes have been made that do not affect the API. Patch releases are usually changes in the parsing or normalization, or support for new WHOIS servers.
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More specific instructions are below.
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## Upgrading from 1.x to 2.x
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The `pythonwhois.whois` method has been removed, and is replaced by the `pythonwhois.get_whois` method, **which has a significantly different API.** The following important changes have to be taken into account:
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* __Empty keys are no longer filled with nulls; they are now simply absent. You cannot assume anymore that any keys will be present in the response, whatsoever.__
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* The `name_servers` key has been renamed to `nameservers`.
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* A new `contacts`key has been added. Refer to the {>usage}(usage instructions) for more information.
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