1 files changed, 15 insertions, 5 deletions
diff --git a/Lib/lib2to3/main.py b/Lib/lib2to3/main.py
index 939f4f7..b286de8 100644
--- a/Lib/lib2to3/main.py
+++ b/Lib/lib2to3/main.py
@@ -10,6 +10,20 @@ import optparse
 from . import refactor
 
 
+class StdoutRefactoringTool(refactor.RefactoringTool):
+    """
+    Prints output to stdout.
+    """
+
+    def log_error(self, msg, *args, **kwargs):
+        self.errors.append((msg, args, kwargs))
+        self.logger.error(msg, *args, **kwargs)
+
+    def print_output(self, lines):
+        for line in lines:
+            print(line)
+
+
 def main(fixer_pkg, args=None):
     """Main program.
 
@@ -68,7 +82,7 @@ def main(fixer_pkg, args=None):
         fixer_names = avail_names if "all" in options.fix else explicit
     else:
         fixer_names = avail_names
-    rt = refactor.RefactoringTool(fixer_names, rt_opts, explicit=explicit)
+    rt = StdoutRefactoringTool(fixer_names, rt_opts, explicit=explicit)
 
     # Refactor all files and directories passed as arguments
     if not rt.errors:
@@ -80,7 +94,3 @@ def main(fixer_pkg, args=None):
 
     # Return error status (0 if rt.errors is zero)
     return int(bool(rt.errors))
-
-
-if __name__ == "__main__":
-    sys.exit(main())