Issue #8515: Set __file__ when run file in IDLE. Backport 2c276d0553ff by

Andrew Svetlov, based on initial patch by Bruce Frederiksen.

Lib/idlelib/ScriptBinding.py

@@ -152,16 +152,16 @@ class ScriptBinding:
         dirname = os.path.dirname(filename)
         # XXX Too often this discards arguments the user just set...
         interp.runcommand("""if 1:
-            _filename = %r
+            __file__ = {filename!r}
             import sys as _sys
             from os.path import basename as _basename
             if (not _sys.argv or
-                _basename(_sys.argv[0]) != _basename(_filename)):
-                _sys.argv = [_filename]
+                _basename(_sys.argv[0]) != _basename(__file__)):
+                _sys.argv = [__file__]
             import os as _os
-            _os.chdir(%r)
-            del _filename, _sys, _basename, _os
-            \n""" % (filename, dirname))
+            _os.chdir({dirname!r})
+            del _sys, _basename, _os
+            \n""".format(filename=filename, dirname=dirname))
         interp.prepend_syspath(filename)
         # XXX KBK 03Jul04 When run w/o subprocess, runtime warnings still
         #         go to __stderr__.  With subprocess, they go to the shell.

Misc/ACKS

@@ -317,6 +317,7 @@ Doug Fort
 John Fouhy
 Stefan Franke
 Martin Franklin
+Bruce Frederiksen
 Robin Friedrich
 Bradley Froehle
 Ivan Frohne

Misc/NEWS

@@ -73,6 +73,9 @@ Build
 IDLE
 ----
 
+- Issue #8515: Set __file__ when run file in IDLE.
+  Initial patch by Bruce Frederiksen.
+
 - Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
 
 - Issue #17511: Keep IDLE find dialog open after clicking "Find Next".