import warnings

from signac import *
__all__ = ['core', 'contrib', 'db']

msg = "compdb was renamed to signac. Please import signac in the future."
print('Warning!',msg)
warnings.warn(msg, DeprecationWarning)

import warnings

from signac import *

msg = "compdb was renamed to signac. Please import signac in the future."
warnings.warn(DeprecationWarning, msg)

--- 
+++ 
@@ -1,6 +1,8 @@
 import warnings
 
 from signac import *
+__all__ = ['core', 'contrib', 'db']
 
 msg = "compdb was renamed to signac. Please import signac in the future."
-warnings.warn(DeprecationWarning, msg)
+print('Warning!',msg)
+warnings.warn(msg, DeprecationWarning)
Add surrogate compdb package, linking to signac.

Provided to guarantee compatibility.
Prints warning on import.
