Use .pya extension instead of simply .py to avoid creating scripts that are importable as modules.

--HG--
extra : histedit_source : ef811b339d08652c845c5556fd7e2d0f38ee12df

setuptools/command/easy_install.py

@@ -1844,8 +1844,8 @@ class WindowsScriptWriter(ScriptWriter):
     @classmethod
     def _get_script_args(cls, type_, name, header, script_text):
         "For Windows, add a .py extension"
-        ext = dict(console='.py', gui='.pyw')[type_]
-        old = ['.py', '-script.py', '.pyc', '.pyo', '.pyw', '.exe']
+        ext = dict(console='.pya', gui='.pyw')[type_]
+        old = ['.pya', '.py', '-script.py', '.pyc', '.pyo', '.pyw', '.exe']
         old.remove(ext)
         header = cls._adjust_header(type_, header)
         blockers = [name+x for x in old]