bpo-42967: coerce bytes separator to string in urllib.parse_qs(l) (#24818)
* coerce bytes separator to string
* Add news
* Update Misc/NEWS.d/next/Library/2021-03-11-00-31-41.bpo-42967.2PeQRw.rst
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 335e183..21cae47 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -733,6 +733,7 @@ def parse_qsl(qs, keep_blank_values=False, strict_parsing=False,
Returns a list, as G-d intended.
"""
qs, _coerce_result = _coerce_args(qs)
+ separator, _ = _coerce_args(separator)
if not separator or (not isinstance(separator, (str, bytes))):
raise ValueError("Separator must be of type string or bytes.")