8000 bpo-40025: Require _generate_next_value_ to be defined before members by abbyonstott · Pull Request #19098 · python/cpython · GitHub
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bpo-40025: Require _generate_next_value_ to be defined before members #19098

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Merged
merged 10 commits into from
Apr 28, 2020
Merged

bpo-40025: Require _generate_next_value_ to be defined before members #19098

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b09b148
Require _generate_next_value_ to be defined before members
abbyonstott Mar 21, 2020
f74f34e
📜🤖 Added by blurb_it.
blurb-it[bot] Mar 21, 2020
b8c1358
add name to ACKS
abbyonstott Mar 21, 2020
20b0ba3
Evaluate self._member_names for truthiness
abbyonstott Mar 21, 2020
186953c
Specify when _generate_next_value_ must be defined
abbyonstott Mar 21, 2020
a386b25
Add test for TypeError raised on incorrect order
abbyonstott Mar 21, 2020
6e15316
Fix whitespace
abbyonstott Mar 21, 2020
28094cf
Specify which error is raised
abbyonstott Mar 22, 2020
c1057d3
Add auto_called attribute to _EnumDict
abbyonstott Mar 22, 2020
8ad99d2
Always set self._auto_called to True
abbyonstott Mar 30, 2020
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Require _generate_next_value_ to be defined before members
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@abbyonstott
abbyonstott committed Mar 21, 2020
commit b09b148abc2a2d15f773db6e30bf0ff8c458b2c3
3 changes: 3 additions & 0 deletions Lib/enum.py
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,9 @@ def __setitem__(self, key, value):
):
raise ValueError('_names_ are reserved for future Enum use')
if key == '_generate_next_value_':
# check if members already defined
if len(self._member_names) > len(dir(super)):
raise TypeError("_generate_next_value_ must be defined before members")
setattr(self, '_generate_next_value', value)
elif key == '_ignore_':
if isinstance(value, str):
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