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-rw-r--r--Lib/json/scanner.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/json/scanner.py b/Lib/json/scanner.py
index 86426cde1a..c451ebab58 100644
--- a/Lib/json/scanner.py
+++ b/Lib/json/scanner.py
@@ -29,7 +29,7 @@ def py_make_scanner(context):
try:
nextchar = string[idx]
except IndexError:
- raise StopIteration(idx)
+ raise StopIteration(idx) from None
if nextchar == '"':
return parse_string(string, idx + 1, strict)