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-rw-r--r--Lib/json/decoder.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/json/decoder.py b/Lib/json/decoder.py
index 2422c6ac10..3741deed7d 100644
--- a/Lib/json/decoder.py
+++ b/Lib/json/decoder.py
@@ -103,7 +103,8 @@ def py_scanstring(s, end, strict=True,
try:
esc = s[end]
except IndexError:
- raise JSONDecodeError("Unterminated string starting at", s, begin)
+ raise JSONDecodeError("Unterminated string starting at",
+ s, begin) from None
# If not a unicode escape sequence, must be in the lookup table
if esc != 'u':
try: