python3-sqlalchemy and debian repo

[Mohsen Pahlevanzadeh]

Dear all,

I want to use sqlalchemy library, When i use "apt-cashe search
sqlalchemy" , get the following result(part of result):
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python-sqlalchemy - SQL toolkit and Object Relational Mapper for Python
python-sqlalchemy-doc - documentation for the SQLAlchemy Python library
python-sqlalchemy-ext - SQL toolkit and Object Relational Mapper for
Python - C extension
python3-sqlalchemy - SQL toolkit and Object Relational Mapper for Python
3
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Question: I want to use python 3, So i didn't doc and ext suffix for
sqlalchemy compatiable with python 3. The given suffix removed in python
3 or merged in python3-sqlalchemy package? 

--mohsen