Version 0.18.0

[tomchristie]

Changelog is as follows...

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0.18.0 (27th April, 2021)

The 0.18.x release series formalises our low-level Transport API, introducing the base classes httpx.BaseTransport and httpx.AsyncBaseTransport.

See the "Writing custom transports" documentation and the httpx.BaseTransport.handle_request() docstring for more complete details on implementing custom transports.

Pull request #1522 includes a checklist of differences from the previous httpcore transport API, for developers implementing custom transports.

The following API changes have been issuing deprecation warnings since 0.17.0 onwards, and are now fully deprecated...

• You should now use httpx.codes consistently instead of httpx.StatusCodes.
• Use limits=... instead of pool_limits=....
• Use proxies={"http://": ...} instead of proxies={"http": ...} for scheme-specific mounting.

Changed

• Transport instances now inherit from httpx.BaseTransport or httpx.AsyncBaseTransport,
  and should implement either the handle_request method or handle_async_request method. (Pull Transport API #1522, Stream interface #1550)
• The response.ext property and Response(ext=...) argument are now named extensions. (Pull Transport API #1522)
• The recommendation to not use data=<bytes|str|bytes (a)iterator> in favour of content=<bytes|str|bytes (a)iterator> has now been escalated to a deprecation warning. (Pull Escalate the distinction between data=... and content=... to be stricter. #1573)
• Drop Response(on_close=...) from API, since it was a bit of leaking implementation detail. (Pull Drop 'Response(on_close=...)' from API #1572)
• When using a client instance, cookies should always be set on the client, rather than on a per-request basis. We prefer enforcing a stricter API here because it provides clearer expectations around cookie persistence, particularly when redirects occur. (Pull Deprecate per-request cookies #1574)
• The runtime exception httpx.ResponseClosed is now named httpx.StreamClosed. (httpx.ResponseClosed -> httpx.StreamClosed #1584)
• The httpx.QueryParams model now presents an immutable interface. The is a discussion on the design and motivation here. Use client.params = client.params.merge(...) instead of client.params.update(...). The basic query manipulation methods are query.set(...), query.add(...), and query.remove(). (Immutable QueryParams #1600)

Added

• The Request and Response classes can now be serialized using pickle. (Make Request and Response picklable #1579)
• Handle data={"key": [None|int|float|bool]} cases. (Pull Handle data={"key": [None|int|float|bool]} cases. #1539)
• Support httpx.URL(**kwargs), for example httpx.URL(scheme="https", host="www.example.com", path="/'), or httpx.URL("https://www.example.com/", username="tom@gmail.com", password="123 456"). (Pull Expand URL interface #1601)
• Support url.copy_with(params=...). (Pull Expand URL interface #1601)
• Add url.params parameter, returning an immutable QueryParams instance. (Pull Expand URL interface #1601)
• Support query manipulation methods on the URL class. These are url.copy_set_param(), url.copy_add_param(), url.copy_remove_param(), url.copy_merge_params(). (Pull Expand URL interface #1601)
• The httpx.URL class now performs port normalization, so :80 ports are stripped from http URLs and :443 ports are stripped from https URLs. (Pull Perform port normalization for http, https, ws, wss, and ftp schemes. #1603)
• The URL.host property returns unicode strings for internationalized domain names. The URL.raw_host property returns byte strings with IDNA escaping applied. (Pull Differentiate between 'url.host' and 'url.raw_host' #1590)

Fixed

• Fix Content-Length for cases of files=... where unicode string is used as the file content. (Pull Fix Content-Length for unicode file contents with multipart #1537)
• Fix some cases of merging relative URLs against Client(base_url=...). (Pull Fix some cases of merging with base_url #1532)
• The request.content attribute is now always available except for streaming content, which requires an explicit .read(). (Pull For non-streaming cases, populate request.content automatically. #1583)

[fabaff]

Is there a ETA for 0.18.0? Thanks

Don't understand me wrong, I'm just asking.

[tomchristie]

I'd strongly expect it to be sometime this week.

[florimondmanca]

Exciting!