Improved the implementation of the internal "dialect" type. The new
implementation features better error reporting, and better compliance
with the PEP.
diff --git a/Lib/csv.py b/Lib/csv.py
index 78b6759..d08a86b 100644
--- a/Lib/csv.py
+++ b/Lib/csv.py
@@ -68,7 +68,7 @@
elif not isinstance(self.lineterminator, str):
errors.append("lineterminator must be a string")
- if self.doublequote not in (True, False):
+ if self.doublequote not in (True, False) and self.quoting != QUOTE_NONE:
errors.append("doublequote parameter must be True or False")
if self.skipinitialspace not in (True, False):