Stowage/cpython
2
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-31 05:31:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

Speed-up building enums by value, e.g. http.HTTPStatus(200) (#11318)

Browse source 
bpo-35585: Speed up enum by-value lookup
This commit is contained in:
Andrew Svetlov 2018-12-26 20:45:33 +02:00 • committed by Ethan Furman
parent 3a81076bbf
commit 34ae04f74d
2 changed files with 5 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Lib/enum.py
View file

@ -563,8 +563,10 @@ def __new__(cls, value):
# by-value search for a matching enum member
# see if it's in the reverse mapping (for hashable values)
try:
if value in cls._value2member_map_:
return cls._value2member_map_[value]
return cls._value2member_map_[value]
except KeyError:
# Not found, no need to do long O(n) search
pass
except TypeError:
# not there, now do long search -- O(n) behavior
for member in cls._member_map_.values():

1
Misc/NEWS.d/next/Library/2018-12-26-02-28-00.bpo-35585.Lkzd3Z.rst Normal file
View file

@ -0,0 +1 @@
Speed-up building enums by value, e.g. http.HTTPStatus(200).