New submission from Xiang Zhang:

The proposed patch cleans up some unnecessary parts in dict implementation 
especially NULL checks in lookup functions. There are four states a 
DictKeyEntry can be. Only in unused(empty) and dummy states me_key can be NULL. 
So NULL checks in used and pending states are not needed.

components: Interpreter Core
files: dict_clean_up.patch
keywords: patch
messages: 276875
nosy: haypo, methane, serhiy.storchaka, xiang.zhang
priority: normal
severity: normal
stage: patch review
status: open
title: Clean up some checks in dict implementation
type: enhancement
versions: Python 3.6, Python 3.7
Added file:

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