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-rw-r--r--tests/basics/string_format.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/basics/string_format.py b/tests/basics/string_format.py
index 55d843e1e1..b0e49f530a 100644
--- a/tests/basics/string_format.py
+++ b/tests/basics/string_format.py
@@ -140,6 +140,13 @@ try:
except ValueError:
print('ValueError')
+# end of format parsing conversion specifier
+try:
+ '{!'.format('a')
+except ValueError:
+ print('ValueError')
+
+# unknown conversion specifier
try:
'abc{!d}'.format('1')
except ValueError:
@@ -150,6 +157,7 @@ try:
except ValueError:
print('ValueError')
+# expected ':' after specifier
try:
'{!s :}'.format(2)
except ValueError: