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-rw-r--r--examples/my_line_rules.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/my_line_rules.py b/examples/my_line_rules.py
index 820024a..3a1ef36 100644
--- a/examples/my_line_rules.py
+++ b/examples/my_line_rules.py
@@ -45,7 +45,7 @@ class SpecialChars(LineRule):
# options can be accessed by looking them up by their name in self.options
for char in self.options['special-chars'].value:
if char in line:
- msg = "Title contains the special character '{0}'".format(char)
+ msg = f"Title contains the special character '{char}'"
violation = RuleViolation(self.id, msg, line)
violations.append(violation)