os: Make listdir() accept bytes arg and have corresponding semantics.

os/metadata.txt

@@ -1,4 +1,4 @@
 srctype = micropython-lib
 type = package
-version = 0.0.8
+version = 0.0.9
 author = Paul Sokolovsky

os/os/__init__.py

@@ -93,10 +93,13 @@ def ilistdir_ex(path="."):
         yield dirent
 
 def listdir(path="."):
+    is_bytes = type(path) is bytes
     res = []
     for dirent in ilistdir_ex(path):
         fname = str(dirent[4].split('\0', 1)[0], "ascii")
         if fname != "." and fname != "..":
+            if is_bytes:
+                fname = fsencode(fname)
             res.append(fname)
     return res
 

os/setup.py

@@ -6,7 +6,7 @@ from setuptools import setup
 
 
 setup(name='micropython-os',
-      version='0.0.8',
+      version='0.0.9',
       description='os module for MicroPython',
       long_description="This is a module reimplemented specifically for MicroPython standard library,\nwith efficient and lean design in mind. Note that this module is likely work\nin progress and likely supports just a subset of CPython's corresponding\nmodule. Please help with the development if you are interested in this\nmodule.",
       url='https://github.com/micropython/micropython/issues/405',