Issue 13296: Fix IDLE to clear compile __future__ flags on shell restart.

(Patch by Roger Serwy)

Lib/idlelib/PyShell.py

@@ -344,6 +344,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
         self.restarting = False
         self.subprocess_arglist = None
         self.port = PORT
+        self.original_compiler_flags = self.compile.compiler.flags
 
     rpcclt = None
     rpcpid = None
@@ -459,6 +460,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
             gui = RemoteDebugger.restart_subprocess_debugger(self.rpcclt)
             # reload remote debugger breakpoints for all PyShellEditWindows
             debug.load_breakpoints()
+        self.compile.compiler.flags = self.original_compiler_flags
         self.restarting = False
         return self.rpcclt
 

Misc/NEWS

@@ -74,6 +74,9 @@ Core and Builtins
 Library
 -------
 
+- Issue 13296: Fix IDLE to clear compile __future__ flags on shell restart.
+  (Patch by Roger Serwy)
+
 - Issue #7334: close source files on ElementTree.parse and iterparse.
 
 - Issue #13232: logging: Improved logging of exceptions in the presence of