1 files changed, 1 insertions, 4 deletions
diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index 05d2f8ccd73..18c91746fd7 100755
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -1099,10 +1099,7 @@ if __name__ == '__main__':
     toaddrs = prompt("To").split(',')
     print("Enter message, end with ^D:")
     msg = ''
-    while 1:
-        line = sys.stdin.readline()
-        if not line:
-            break
+    while line := sys.stdin.readline():
         msg = msg + line
     print("Message length is %d" % len(msg))