From e7691d36b70968ae6fd7f7d537922a6da45fc1d1 Mon Sep 17 00:00:00 2001
From: Johannes Gijsbers <jlg@dds.nl>
Date: Tue, 17 Aug 2004 13:21:53 +0000
Subject: [PATCH] Use readline/raw_input() in pydoc.Helper.interact if
 available and self.input is sys.stdin. Based on a patch (#726204) by Dmitry
 Vasiliev and a comment from Guido in an older patch (#549901).

---
 Lib/pydoc.py | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index c02c1407f74..12ae27795cd 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -1618,16 +1618,24 @@ has the same effect as typing a particular string at the help> prompt.
     def interact(self):
         self.output.write('\n')
         while True:
-            self.output.write('help> ')
-            self.output.flush()
             try:
-                request = self.input.readline()
+                request = self.getline('help> ')
                 if not request: break
-            except KeyboardInterrupt: break
+            except (KeyboardInterrupt, EOFError):
+                break
             request = strip(replace(request, '"', '', "'", ''))
             if lower(request) in ['q', 'quit']: break
             self.help(request)
 
+    def getline(self, prompt):
+        """Read one line, using raw_input when available."""
+        if self.input is sys.stdin:
+            return raw_input(prompt)
+        else:
+            self.output.write(prompt)
+            self.output.flush()
+            return self.input.readline()
+
     def help(self, request):
         if type(request) is type(''):
             if request == 'help': self.intro()