Index: Lib/getpass.py
===================================================================
--- Lib/getpass.py	(revision 59601)
+++ Lib/getpass.py	(working copy)
@@ -78,6 +78,7 @@
     prompt = str(prompt)
     if prompt:
         stream.write(prompt)
+        stream.flush()
     line = sys.stdin.readline()
     if not line:
         raise EOFError