async: rename to async_reader

async is becoming a reserved word in Python 3.7

amodem/__main__.py

@@ -8,7 +8,7 @@ import zlib
 
 import pkg_resources
 
-from . import async
+from . import async_reader
 from . import audio
 from . import calib
 from . import main
@@ -77,7 +77,7 @@ def FileType(mode, interface_factory=None):
             assert audio_interface is not None
             if 'r' in mode:
                 s = audio_interface.recorder()
-                return async.AsyncReader(stream=s, bufsize=s.bufsize)
+                return async_reader.AsyncReader(stream=s, bufsize=s.bufsize)
             if 'w' in mode:
                 return audio_interface.player()
 

amodem/tests/test_async_reader.py

@@ -1,7 +1,7 @@
 import mock
 import time
 import pytest
-from amodem import async
+from amodem import async_reader
 import logging
 
 logging.basicConfig(format='%(message)s')
@@ -13,7 +13,7 @@ def test_async_reader():
         return b'\x00' * n
     s = mock.Mock()
     s.read = _read
-    r = async.AsyncReader(s, 1)
+    r = async_reader.AsyncReader(s, 1)
 
     n = 5
     assert r.read(n) == b'\x00' * n
@@ -25,6 +25,6 @@ def test_async_reader():
 def test_async_reader_error():
     s = mock.Mock()
     s.read.side_effect = IOError()
-    r = async.AsyncReader(s, 1)
+    r = async_reader.AsyncReader(s, 1)
     with pytest.raises(IOError):
         r.read(3)