more datavars fixes

pym/install/variables/disk.py

@@ -607,8 +607,9 @@ class VariableOsDiskType(ReadonlyVariable):
 
     def get(self):
         """Get partition scheme"""
-        types = map(lambda x: (x, device.udev.get_device_type(name=x)),
-                    self.Get('os_disk_dev'))
+
+        types = list(map(lambda x: (x, device.udev.get_device_type(name=x)),
+                    self.Get('os_disk_dev')))
         lvmUsedDisks = {}
         raidUsedDisks = {}
 
@@ -622,7 +623,6 @@ class VariableOsDiskType(ReadonlyVariable):
                                                  ",".join(
                                                      lvmUsedDisks[diskName]))
             return diskName, diskType
-
         for dev, diskType in types:
             prop = device.udev.get_device_info(name=dev)
             if self.re_raid.search(diskType):
@@ -766,7 +766,7 @@ class VariableOsDiskPart(ReadonlyVariable):
     If gpt then gpt
     """
     type = "list"
-
+    
     def get(self):
         def generator():
             for disk_dev, disk_type in self.ZipVars(