Merge branch 'release/0.0.4'

.idea/encodings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
+</project>

.idea/misc.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.6 (raumklima)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (raumklima)" project-jdk-type="Python SDK" />
 </project>

.idea/raumklima.iml

@@ -5,7 +5,7 @@
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Python 3.7 (raumklima)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TestRunnerService">

.travis.yml

@@ -1,9 +1,11 @@
 language: python
 
+dist: xenial
+
 python:
   - 3.5
   - 3.6
-  - 3.7-dev
+  - 3.7
 
 cache: pip
 

src/rs500reader/reader.py

@@ -13,7 +13,7 @@ class Rs500Reader(object):
         self.__vendor = vendor_id
         self.__product = product_id
 
-    def __query(self) -> Optional[list]:
+    def __query(self) -> list:
         try:
             rs500_hid = hid.device()
             rs500_hid.open(self.__vendor, self.__product)
@@ -31,13 +31,20 @@ class Rs500Reader(object):
             rs500_hid.close()
             return data
         except IOError as e:
-            print(e, file=stderr)
-            return None
+            print(
+                'Lesefehler beim Lesen von des HID Devices: "{}"; entweder ist die Hardware nicht vorhanden oder '
+                'defekt, oder es liegt ein Rechteproblem vor.'.format(e),
+                file=stderr
+            )
+            raise
 
     def get_data(self) -> Optional[Response]:
-        data = self.__query()
+        try:
+            data = self.__query()
+        except IOError:
+            return None
         if len(data) != 64:
-            print('ungültige Länge: ' + len(data), file=stderr)
+            print('ungültige Länge: {}'.format(len(data)), file=stderr)
             return None
         response = Response()
         channel = 0