Gracefully handle files with names that break csv.reader

* If encountered, sift_drive will abandon looking at all sibling and
* child items related to the problematic one, and continue on after
* reporting the error

collab_admin_kit/sift_drive.py

@@ -88,29 +88,37 @@ class Sifter:
                 delimiter=',',
                 quotechar='"'
             )
-            for child in children:
-                if not hasattr(self, 'ignore_owner'):
-                    if self.account != child['owners.0.emailAddress']:
-                        continue
-
-                data = {
-                    'owner': child['owners.0.emailAddress'],
-                    'name': child['title'],
-                    'id': child['id'],
-                    'link': child['alternateLink'],
-                    'parent': '\\'.join(self.parent)
-                }
-
-                if in_private or child['title'].lower() in self.omit_folders:
-                    self.private_files[child['id']] = data
-                    if 'folder' in child['mimeType']:
-                        self.parent.append(child['title'])
-                        self.sift(child['id'], in_private=True)
-                else:
-                    self.transfer_files[child['id']] = data
-                    if 'folder' in child['mimeType']:
-                        self.parent.append(child['title'])
-                        self.sift(child['id'], in_private=False)
+            try:
+                for child in children:
+                    if not hasattr(self, 'ignore_owner'):
+                        if self.account != child['owners.0.emailAddress']:
+                            continue
+
+                    data = {
+                        'owner': child['owners.0.emailAddress'],
+                        'name': child['title'],
+                        'id': child['id'],
+                        'link': child['alternateLink'],
+                        'parent': '\\'.join(self.parent)
+                    }
+
+                    _title = child['title'].lower()
+                    if in_private or _title in self.omit_folders:
+                        self.private_files[child['id']] = data
+                        if 'folder' in child['mimeType']:
+                            self.parent.append(child['title'])
+                            self.sift(child['id'], in_private=True)
+                    else:
+                        self.transfer_files[child['id']] = data
+                        if 'folder' in child['mimeType']:
+                            self.parent.append(child['title'])
+                            self.sift(child['id'], in_private=False)
+            except csv.Error:
+                self.logger.warning(
+                    'Failed reading files in {}.'
+                    'Check for bad file title(s)?'.format(self.parent),
+                    extra={'entity': self.account}
+                )
 
         self.parent.pop()