more python 3 compatibility

Adafruit_BluefruitLE/services/__init__.py

@@ -1,3 +1,3 @@
-from uart import UART
-from device_information import DeviceInformation
-from colorific import Colorific
+from .uart import UART
+from .device_information import DeviceInformation
+from .colorific import Colorific

Adafruit_BluefruitLE/services/uart.py

@@ -21,7 +21,7 @@
 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
-import Queue
+import queue
 import uuid
 
 from .servicebase import ServiceBase
@@ -49,7 +49,7 @@ def __init__(self, device):
         self._rx = self._uart.find_characteristic(RX_CHAR_UUID)
         # Use a queue to pass data received from the RX property change back to
         # the main thread in a thread-safe way.
-        self._queue = Queue.Queue()
+        self._queue = queue.Queue()
         # Subscribe to RX characteristic changes to receive data.
         self._rx.start_notify(self._rx_received)
 
@@ -72,6 +72,6 @@ def read(self, timeout_sec=None):
         """
         try:
             return self._queue.get(timeout=timeout_sec)
-        except Queue.Empty:
+        except queue.Empty:
             # Timeout exceeded, return None to signify no data received.
             return None

examples/low_level.py

@@ -80,7 +80,7 @@ def main():
 
         # Function to receive RX characteristic changes.  Note that this will
         # be called on a different thread so be careful to make sure state that
-        # the function changes is thread safe.  Use Queue or other thread-safe
+        # the function changes is thread safe.  Use queue or other thread-safe
         # primitives to send data to other threads.
         def received(data):
             print('Received: {0}'.format(data))

setup.py

@@ -9,4 +9,5 @@
       description       = 'Python library for interacting with Bluefruit LE (Bluetooth low energy) devices on Linux or OSX.',
       license           = 'MIT',
       url               = 'https://github.com/adafruit/Adafruit_Python_BluefruitLE/',
+      install_requires  = ['future',],
       packages          = find_packages())