[Python-Dev] RFC: Backport ssl.MemoryBIO and ssl.SSLObject to Python 2.7 (original) (raw)

Barry Warsaw barry at python.org
Fri Jun 2 12:21:17 EDT 2017

On Jun 03, 2017, at 02:10 AM, Nick Coghlan wrote:

* Introduce a dependency from requests onto PyOpenSSL when running in async mode on Python 2.7 in the general case, and figure out some other pip-specific option for ensurepip bootstrapping (like a private MemoryBIO implementation, or falling back to synchronous mode in requests) [...]

If we adopted the latter approach, then for almost all intents and purposes, ssl.MemoryBIO and ssl.SSLObject would remain a Python 3.5+ only API, and anyone wanting access to it on 2.7 would still need to depend on PyOpenSSL. The benefit of making any backport a private API is that it would mean we weren't committing to support that API for general use: it would be supported solely for the use case discussed in the PEP (i.e. helping to advance the development of PEP 543 without breaking pip bootstrapping in the process).

That sounds like a good compromise. My own major objection was in exposing a new public API in Python 2.7, which would clearly be a new feature.

Cheers, -Barry

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