Don't raise error on file not existing

drivepy/config.py

@@ -9,6 +9,9 @@ ALL_SINGLE_FILE_FIELDS = 'appProperties,capabilities,contentHints,createdTime,de
 
 ALL_PERMISSION_FIELDS = 'allowFileDiscovery,displayName,domain,emailAddress,id,kind,photoLink,role,type'
 
+class GoogleDriveParameterError(Exception):
+    pass
+
 class PermissionRole(object):
     Reader = 'reader'
     Writer = 'writer'

drivepy/drive.py

@@ -48,7 +48,7 @@ class GoogleDrive(object):
             A list of the newly created file and it's directories
 
         Raises:
-            A GoogleFileException if the permissions object is specified and
+            A GoogleDriveParameterError if the permissions object is specified and
             there is no 'email' key
         """
         file_sections = path.split('/')
@@ -89,7 +89,7 @@ class GoogleDrive(object):
             for permission in permissions:
                 email = permission.pop('email', '')
                 if not email:
-                    raise Exception('There must be an email key in the permissions object!')
+                    raise config.GoogleDriveParameterError('There must be an email key in the permissions object!')
                 for google_file in result:
                     google_file.give_permission(email, **permission)
 
@@ -125,7 +125,7 @@ class GoogleDrive(object):
                 fold = folds[0]
                 parent_id = fold['id']
             else:
-                raise Exception('File {} does not exist!'.format(path))
+                return []
 
         files = self.list_files(q='name = "{}" and "{}" in parents'.format(file_name, parent_id))