only output results during testing

config.sample.py

@@ -5,3 +5,5 @@ people = {
 }
 
 sender = "Randomizer <script@example.com>"
+
+debug = False

mail.py

@@ -1,7 +1,7 @@
 import smtplib
 from email.mime.text import MIMEText
 
-from config import sender
+from config import sender, debug
 
 s = smtplib.SMTP('localhost')
 
@@ -13,5 +13,5 @@ def notify(name: str, email: str, chosen_person: str) -> None:
     msg['Subject'] = f"Result of shuffle for {name}"
     msg['From'] = sender
     msg['To'] = to
-    print(msg.as_string())
+    if debug: print(msg.as_string())
     s.sendmail(sender, [to], msg.as_string())

main.py

@@ -1,11 +1,11 @@
-from config import people
+from config import people, debug
 from derangement import get_derangement
 from mail import notify
 
 names = list(people.keys())
 
 shuffled = get_derangement(names)
-print(shuffled)
+if debug: print(shuffled)
 
 i = 0
 for name, email in people.items():