diff -r ebe18b90618c Lib/getpass.py
--- a/Lib/getpass.py	Tue Apr 08 14:58:35 2014 -0400
+++ b/Lib/getpass.py	Wed Apr 09 22:55:49 2014 +0530
@@ -19,6 +19,7 @@
 import io
 import os
 import sys
+import locale
 import warnings
 
 __all__ = ["getpass","getuser","GetPassWarning"]
@@ -135,7 +136,13 @@
         input = sys.stdin
     prompt = str(prompt)
     if prompt:
-        stream.write(prompt)
+        try:
+            stream.write(prompt)
+        except UnicodeEncodeError:
+            locale_encoding = locale.getpreferredencoding()
+            prompt = prompt.encode( locale_encoding, 'replace')
+            prompt = prompt.decode(locale_encoding)
+            stream.write(prompt)
         stream.flush()
     # NOTE: The Python C API calls flockfile() (and unlock) during readline.
     line = input.readline()
diff -r ebe18b90618c Lib/test/test_getpass.py
--- a/Lib/test/test_getpass.py	Tue Apr 08 14:58:35 2014 -0400
+++ b/Lib/test/test_getpass.py	Wed Apr 09 22:55:49 2014 +0530
@@ -4,6 +4,7 @@
 from io import BytesIO, StringIO
 from unittest import mock
 from test import support
+from test.support import run_with_locale
 
 try:
     import termios
@@ -69,6 +70,14 @@
         getpass._raw_input(stream=StringIO())
         mock_input.readline.assert_called_once_with()
 
+    @run_with_locale('LC_ALL', 'C')
+    @mock.patch('sys.stdin')
+    def test_uses_stdin_as_different_locale(self, mock_input):
+        mock_input.readline.return_value = "Hasło: "
+        getpass._raw_input(stream=StringIO())
+        mock_input.readline.assert_called_once_with()
+
+
     def test_raises_on_empty_input(self):
         input = StringIO('')
         self.assertRaises(EOFError, getpass._raw_input, input=input)