I just installed SQLAlchemy from GitHub using:

```
$ pip install git+git://github.com/zzzeek/sqlalchemy.git
```

and then:

```
$ python
>>> from sqlalchemy.sql import functions
>>> functions.Function
<class 'sqlalchemy.sql.functions.Function'>
>>> functions.FunctionElement
<class 'sqlalchemy.sql.functions.FunctionElement'>
>>> functions._FunctionGenerator
<class 'sqlalchemy.sql.functions._FunctionGenerator'>
```

So I'm still failing to understand what the problem is, and what I'm missing.