def _prefix(prefix, s):
- if not s.startswith(prefix):
+ if s and not s.startswith(prefix):
return '{}{}'.format(prefix, s)
return s
def untag(prefix, s):
- if s.startswith(prefix):
+ if s and s.startswith(prefix):
return s[len(prefix):]
return s
def model(cloud_name):
return _prefix('model-', cloud_name)
+
+
+def user(username):
+ return _prefix('user-', username)