Multi with statement

Lib/test/test_parser.py

 import parser
 import os
 import unittest
 import sys
 from test import test_support
 
 #
 #  First, we test that we can generate trees from valid source fragments,
 #  and that these valid trees are indeed allowed by the tree-loading side
 #  of the parser module.
@@ skipping 181 matching lines @@
     def test_pep263(self):
         self.check_suite("# -*- coding: iso-8859-1 -*-\n"
                          "pass\n")
 
     def test_assert(self):
         self.check_suite("assert alo < ahi and blo < bhi\n")
 
     def test_with(self):
         self.check_suite("with open('x'): pass\n")
         self.check_suite("with open('x') as f: pass\n")
+        self.check_suite("with open('x') as f, open('y') as g: pass\n")
 
     def test_try_stmt(self):
         self.check_suite("try: pass\nexcept: pass\n")
         self.check_suite("try: pass\nfinally: pass\n")
         self.check_suite("try: pass\nexcept A: pass\nfinally: pass\n")
         self.check_suite("try: pass\nexcept A: pass\nexcept: pass\n"
                          "finally: pass\n")
         self.check_suite("try: pass\nexcept: pass\nelse: pass\n")
         self.check_suite("try: pass\nexcept: pass\nelse: pass\n"
                          "finally: pass\n")
@@ skipping 316 matching lines @@
     test_support.run_unittest(
         RoundtripLegalSyntaxTestCase,
         IllegalSyntaxTestCase,
         CompileTestCase,
         ParserStackLimitTestCase,
     )
 
 
 if __name__ == "__main__":
     test_main()