From 1aa422fe8f056fd0000da45a67d875adc75cf034 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Langa?= <lukasz@langa.pl>
Date: Thu, 28 Apr 2011 17:03:45 +0200
Subject: Closes #11324: ConfigParser(interpolation=None) doesn't work.

Initial patches by Tobias Brink. Thanks!
---
 Lib/configparser.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'Lib/configparser.py')

diff --git a/Lib/configparser.py b/Lib/configparser.py
index 0ecff701ad..82b6f03061 100644
--- a/Lib/configparser.py
+++ b/Lib/configparser.py
@@ -623,11 +623,12 @@ class RawConfigParser(MutableMapping):
         self._strict = strict
         self._allow_no_value = allow_no_value
         self._empty_lines_in_values = empty_lines_in_values
-        if interpolation is _UNSET:
-            self._interpolation = self._DEFAULT_INTERPOLATION
-        else:
-            self._interpolation = interpolation
         self.default_section=default_section
+        self._interpolation = interpolation
+        if self._interpolation is _UNSET:
+            self._interpolation = self._DEFAULT_INTERPOLATION
+        if self._interpolation is None:
+            self._interpolation = Interpolation()
 
     def defaults(self):
         return self._defaults
-- 
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