8000 bpo-39068 guard _b85chars2 initialization by drmonkeysee · Pull Request #17627 · python/cpython · GitHub
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bpo-39068 guard _b85chars2 initialization #17627

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Merged
merged 4 commits into from
Dec 31, 2020
Merged

bpo-39068 guard _b85chars2 initialization #17627

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04967d1
guard _b85chars2 table
drmonkeysee Dec 16, 2019
bf5a325
only check latter var and fix a85 as well
drmonkeysee Dec 16, 2019
9e86e22
add news and ack entries
drmonkeysee Jan 6, 2020
6562ee4
rename file to match time the bug was filed
drmonkeysee Jan 6, 2020
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only check latter var and fix a85 as well
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@drmonkeysee
drmonkeysee committed Dec 16, 2019
commit bf5a325492edc09cd9386930cd24e2ae60c9687d
5 changes: 2 additions & 3 deletions Lib/base64.py
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Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,7 @@ def a85encode(b, *, foldspaces=False, wrapcol=0, pad=False, adobe=False):
global _a85chars, _a85chars2
# Delay the initialization of tables to not waste memory
# if the function is never called
if _a85chars is None:
if _a85chars2 is None:
_a85chars = [bytes((i,)) for i in range(33, 118)]
_a85chars2 = [(a + b) for a in _a85chars for b in _a85chars]

Expand Down Expand Up @@ -428,9 +428,8 @@ def b85encode(b, pad=False):
global _b85chars, _b85chars2
# Delay the initialization of tables to not waste memory
# if the function is never called
if _b85chars is None:
_b85chars = [bytes((i,)) for i in _b85alphabet]
if _b85chars2 is None:
_b85chars = [bytes((i,)) for i in _b85alphabet]
_b85chars2 = [(a + b) for a in _b85chars for b in _b85chars]
return _85encode(b, _b85chars, _b85chars2, pad)

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