Python 3 fixes for rtdist builds

direct/src/p3d/panda3d.pdef

@@ -63,8 +63,10 @@ class panda3d(package):
 
     # Include various standard Python encodings.  The rest is in morepy.
     module('encodings', 'encodings.aliases', 'encodings.undefined',
-           'encodings.utf_8', 'encodings.ascii', 'encodings.string_escape',
-           'encodings.mbcs', 'encodings.latin_1', 'io')
+           'encodings.utf_8', 'encodings.ascii', 'encodings.mbcs',
+           'encodings.latin_1', 'io')
+    if sys.version_info < (3, 0):
+        module('encodings.string_escape')
 
     # Pick up the shader files that appear in direct/src/filter.
     import direct

direct/src/plugin/p3dPythonRun.cxx

@@ -217,6 +217,24 @@ run_python() {
     PyModule_AddStringConstant(showbase_module, "__package__", "direct.showbase");
   }
 
+  PyObject *stdpy_module = PyImport_AddModule("direct.stdpy");
+  if (stdpy_module != NULL) {
+    Filename stdpy_dir(direct_dir, "stdpy");
+    dir_str = stdpy_dir.to_os_specific();
+    PyModule_AddObject(stdpy_module, "__path__", Py_BuildValue("[s#]", dir_str.data(), dir_str.length()));
+    PyModule_AddStringConstant(stdpy_module, "__package__", "direct.stdpy");
+  }
+
+  // And the encodings package as well, since we've presumably picked up a
+  // bunch of encodings modules as part of the frozen bundle.
+  Filename encodings_dir(dir, "encodings");
+  PyObject *encodings_module = PyImport_AddModule("encodings");
+  if (encodings_module != NULL) {
+    dir_str = encodings_dir.to_os_specific();
+    PyModule_AddObject(encodings_module, "__path__", Py_BuildValue("[s#]", dir_str.data(), dir_str.length()));
+    PyModule_AddStringConstant(encodings_module, "__package__", "encodings");
+  }
+
   // And register the VFSImporter.
   PyObject *result = PyObject_CallMethod(vfsimporter_module, (char *)"register", (char *)"");
   if (result == NULL) {

direct/src/showbase/VFSImporter.py

@@ -2,6 +2,7 @@ __all__ = ['register', 'sharedPackages',
            'reloadSharedPackage', 'reloadSharedPackages']
 
 from panda3d.core import Filename, VirtualFileSystem, VirtualFileMountSystem, OFileStream, copyStream
+from direct.stdpy.file import open
 import sys
 import marshal
 import imp
@@ -173,10 +174,7 @@ class VFSLoader:
         filename = Filename(self.filename)
         filename.setExtension('py')
         filename.setText()
-        vfile = vfs.getFile(filename)
-        if not vfile:
-            raise IOError("Could not find '%s'" % (filename))
-        return vfile.readFile(True)
+        return open(self.filename, self.desc[1]).read()
 
     def _import_extension_module(self, fullname):
         """ Loads the binary shared object as a Python module, and

direct/src/showutil/FreezeTool.py

@@ -1190,7 +1190,7 @@ class Freezer:
 
             if self.storePythonSource:
                 filename += '.py'
-                stream = StringStream('')
+                stream = StringStream(b'')
                 if multifile.findSubfile(filename) < 0:
                     multifile.addSubfile(filename, stream, 0)
                     multifile.flush()