dumb fix

pi-calendar-sign.py

@@ -33,9 +33,9 @@ def is_work_time(now):
     return now < WORK_STOP and now > WORK_START
 
 def format_text(text):
-    text = text[:16]
-    text += f"\n" + text[16:]
-    return text
+    formatted = text[:16]
+    formatted += f"\n" + text[16:]
+    return formatted
 
 def update_display(color, text, cursor = False, blink = False):
     print(text)