when using PyInstaller, list modules directly from files instead of u…

…sing pkgutil.iter_modules which is not suported (#927)

faker/utils/loading.py

@@ -7,8 +7,15 @@
 def get_path(module):
     if getattr(sys, 'frozen', False):
         # frozen
-        base_dir = os.path.dirname(sys.executable)
-        lib_dir = os.path.join(base_dir, "lib")
+
+        if getattr(sys, '_MEIPASS', False):
+            # PyInstaller
+            lib_dir = getattr(sys, '_MEIPASS')
+        else:
+            # others
+            base_dir = os.path.dirname(sys.executable)
+            lib_dir = os.path.join(base_dir, "lib")
+
         module_to_rel_path = os.path.join(*module.__package__.split("."))
         path = os.path.join(lib_dir, module_to_rel_path)
     else:
@@ -19,9 +26,14 @@ def get_path(module):
 
 def list_module(module):
     path = get_path(module)
-    modules = [name for _, name,
-               is_pkg in pkgutil.iter_modules([path]) if is_pkg]
-    return modules
+
+    if getattr(sys, '_MEIPASS', False):
+        # PyInstaller
+        return [name for name in os.listdir(path)
+                if os.path.isdir(os.path.join(path, name)) and
+                "__init__.py" in os.listdir(os.path.join(path, name))]
+    else:
+        return [name for _, name, is_pkg in pkgutil.iter_modules([path]) if is_pkg]
 
 
 def find_available_locales(providers):