Python: import from levels 1+ down

Say I am importing an unnecessary long full path:

from pandas.core.series import Series

      

        
        
        
      

    

More general imports are simple:

from pandas import Series

      

        
        
        
      

    

with which I can view the full path with:

Series
Out[6]: pandas.core.series.Series

      

        
        
        
      

    

Here is the source of my confusion. There is __init__

no import from core import *

(or core.series

for that matter) anywhere in the top level . The module __init__

for is .core

also empty.

What allows me to use a simple from pandas import Series

rather than a full path or, more generally, import a module, function, variable, or class that is "several levels down"?