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bpo-45975: Simplify some while-loops with walrus operator (GH-29347)

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Nick Drozd 2022-11-26 16:33:25 -06:00 • committed by GitHub
parent 25bc115df9
commit 024ac542d7
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GPG key ID: 4AEE18F83AFDEB23
28 changed files with 41 additions and 153 deletions
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15
Lib/base64.py
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@ -508,14 +508,8 @@ MAXBINSIZE = (MAXLINESIZE//4)*3
def encode(input, output):
"""Encode a file; input and output are binary files."""
while True:
s = input.read(MAXBINSIZE)
if not s:
break
while len(s) < MAXBINSIZE:
ns = input.read(MAXBINSIZE-len(s))
if not ns:
break
while s := input.read(MAXBINSIZE):
while len(s) < MAXBINSIZE and (ns := input.read(MAXBINSIZE-len(s))):
s += ns
line = binascii.b2a_base64(s)
output.write(line)
@ -523,10 +517,7 @@ def encode(input, output):
def decode(input, output):
"""Decode a file; input and output are binary files."""
while True:
line = input.readline()
if not line:
break
while line := input.readline():
s = binascii.a2b_base64(line)
output.write(s)