Specify arch version

appveyor.yml

@@ -15,13 +15,36 @@ environment:
 
   matrix:
     - PYTHON: C:\Python27
+      PYTHON_VERSION: 2.7
+      PYTHON_ARCH: 32
+
     - PYTHON: C:\Python27-x64
+      PYTHON_VERSION: 2.7
+      PYTHON_ARCH: 64
+
     - PYTHON: C:\Python34
+      PYTHON_VERSION: 3.4
+      PYTHON_ARCH: 32
+
     - PYTHON: C:\Python34-x64
+      PYTHON_VERSION: 3.4
+      PYTHON_ARCH: 64
+
     - PYTHON: C:\Python35
+      PYTHON_VERSION: 3.5
+      PYTHON_ARCH: 32
+
     - PYTHON: C:\Python35-x64
+      PYTHON_VERSION: 3.5
+      PYTHON_ARCH: 64
+
     - PYTHON: C:\Python36
+      PYTHON_VERSION: 3.6
+      PYTHON_ARCH: 32
+
     - PYTHON: C:\Python36-x64
+      PYTHON_VERSION: 3.6
+      PYTHON_ARCH: 64
 
 matrix:
     fast_finish: true