#61: compatibility with newer version of python 3

lib/pkg_resources.py

@@ -1337,8 +1337,9 @@ def _get(self, path):
 
 register_loader_type(type(None), DefaultProvider)
 
-if importlib_bootstrap is not None:
-    register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
+#PY3:
+#if importlib_bootstrap is not None:
+#    register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
 
 
 class EmptyProvider(NullProvider):
@@ -1746,7 +1747,12 @@ def StringIO(*args, **kw):
     try:
         from cStringIO import StringIO
     except ImportError:
-        from StringIO import StringIO
+        try:
+            from StringIO import StringIO
+        except ImportError:
+            #PY3:
+            from io import BytesIO
+            return BytesIO(*args,**kw)
     return StringIO(*args,**kw)
 
 def find_nothing(importer, path_item, only=False):
@@ -1795,8 +1801,9 @@ def find_on_path(importer, path_item, only=False):
                         break
 register_finder(ImpWrapper,find_on_path)
 
-if importlib_bootstrap is not None:
-    register_finder(importlib_bootstrap.FileFinder, find_on_path)
+#PY3:
+#if importlib_bootstrap is not None:
+#    register_finder(importlib_bootstrap.FileFinder, find_on_path)
 
 _declare_state('dict', _namespace_handlers={})
 _declare_state('dict', _namespace_packages={})
@@ -1897,8 +1904,9 @@ def file_ns_handler(importer, path_item, packageName, module):
 register_namespace_handler(ImpWrapper,file_ns_handler)
 register_namespace_handler(zipimport.zipimporter,file_ns_handler)
 
-if importlib_bootstrap is not None:
-    register_namespace_handler(importlib_bootstrap.FileFinder, file_ns_handler)
+#PY3:
+#if importlib_bootstrap is not None:
+#    register_namespace_handler(importlib_bootstrap.FileFinder, file_ns_handler)
 
 
 def null_ns_handler(importer, path_item, packageName, module):