# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1477175792 -7200
# Node ID 2b3004a5a83bb26a6512563bf7ccd70a6308dc68
# Parent  0158d9bb04c117dab1b186bb6572fcbfff3aee7c
Attempt to work around argument sequence type mismatches when serialising.

diff -r 0158d9bb04c1 -r 2b3004a5a83b compiler/ast.py
--- a/compiler/ast.py	Sun Oct 23 00:35:33 2016 +0200
+++ b/compiler/ast.py	Sun Oct 23 00:36:32 2016 +0200
@@ -437,7 +437,7 @@
     def __str__(self):
         star_args = self.star_args and ["*%s" % self.star_args] or []
         dstar_args = self.dstar_args and ["**%s" % self.dstar_args] or []
-        return "%s(%s)" % (self.node, ", ".join(map(str, self.args + star_args + dstar_args)))
+        return "%s(%s)" % (self.node, ", ".join(map(str, tuple(self.args) + tuple(star_args) + tuple(dstar_args))))
 
 class Class(Node):
     def __init__(self, name, bases, doc, code, decorators = None, lineno=None):