Issue #15020: The program name used to search for Python's path is now python3…

Issue #15020: The program name used to search for Python's path is now python3 under Unix, not python.

Misc/NEWS

@@ -10,6 +10,9 @@ What's New in Python 3.3.0 Beta 2?
 Core and Builtins
 -----------------
 
+- Issue #15020: The program name used to search for Python's path is now
+  "python3" under Unix, not "python".
+
 - Issue #15033: Fix the exit status bug when modules invoked using -m swith,
   return the proper failure return value (1). Patch contributed by Jeff Knupp.
 

Python/pythonrun.c

@@ -778,7 +778,11 @@ Py_EndInterpreter(PyThreadState *tstate)
     PyInterpreterState_Delete(interp);
 }
 
+#ifdef MS_WINDOWS
 static wchar_t *progname = L"python";
+#else
+static wchar_t *progname = L"python3";
+#endif
 
 void
 Py_SetProgramName(wchar_t *pn)