Currently they wrap them into pvector which is not as efficient as it could be in Python 3.
貢獻者指南
技術棧
python
領域
data
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
Python 3 knowledgepyrsistent internals
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
40
研究方向
The issue requests making PMap.keys(), .values(), and .items() return proper iterables instead of wrapping results in pvector. The current implementation is in the source file for PMap, likely in pyrsistent/ pmap.py. The contributor should examine the methods and understand how to return view objects or generators. The 3 comments may contain hints, but are not shown here. No linked PRs exist, so the work is still open.
PMap values, keys, and items should be iterables in Python 3 · tobgu/pyrsistent#159 | Good First Issue
