Resolve namespace package (#264)

pyhocon/config_parser.py

@@ -68,19 +68,20 @@ def glob(pathname, recursive=False):
 if sys.version_info >= (3, 4):
     import importlib.util
 
-    def find_package_dir(name):
+    def find_package_dirs(name):
         spec = importlib.util.find_spec(name)
         # When `imp.find_module()` cannot find a package it raises ImportError.
         # Here we should simulate it to keep the compatibility with older
         # versions.
         if not spec:
             raise ImportError('No module named {!r}'.format(name))
-        return os.path.dirname(spec.origin)
+        return spec.submodule_search_locations
 else:
     import imp
+    import importlib
 
-    def find_package_dir(name):
-        return imp.find_module(name)[1]
+    def find_package_dirs(name):
+        return [imp.find_module(name)[1]]
 
 
 logger = logging.getLogger(__name__)
@@ -758,9 +759,14 @@ def resolve_package_path(cls, package_path):
         if ':' not in package_path:
             raise ValueError("Expected format is 'PACKAGE:PATH'")
         package_name, path_relative = package_path.split(':', 1)
-        package_dir = find_package_dir(package_name)
-        path_abs = os.path.join(package_dir, path_relative)
-        return path_abs
+        package_dirs = find_package_dirs(package_name)
+        for package_dir in package_dirs:
+            path_abs = os.path.join(package_dir, path_relative)
+            if os.path.exists(path_abs):
+                return path_abs
+        raise ImportError("Can't find {path_relative} in package:{package_name}".format(
+            path_relative=path_relative,
+            package_name=package_name))
 
 
 class ListParser(TokenConverter):