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article-resources/K-Means Clustering/K-Means Clustering.ipynb

This line is giving the following error
x = np.arange(len(y))
NameError: name 'y' is not defined,

here in 354 error is displaying as "list attribute has no attribute items"

In this part:

unemployment = pd.read_csv('/Users/tdobbins/Downloads/hpi/unemployment-macro.csv')

Actually the correct path is:

unemployment = pd.read_csv('/Users/tdobbins/Downloads/hpi/unemployment.csv')

Article: K-Means Clustering

the following line of code is throwing "ValueError: Grouper for '1.0' not 1-dimensional"

sns.barplot(x, nmi_results, palette='Blues', ax=ax1)

Hi Brendan, how are you doing?

Regarding the article Guide to Using Databases with Python Postgres, SQLAlchemy, and Alembic, I applied this in my project:

from contextlib import contextmanager

@contextmanager
def session_scope():
    session = Session()
    try:
        yield session
        session.commit()
    except Exception:
        session.rollback()
        raise
    finally:
        session.close()

but now, when I try to query something to pass to my service layer, I'm getting this error:
sqlalchemy.orm.exc.DetachedInstanceError: Instance <Driver at 0x7f5ce0464c40> is not bound to a Session; attribute refresh operation cannot proceed (Background on this error at: http://sqlalche.me/e/14/bhk3)

this is my code:

def find_all(model, skip: int = 0, limit: int = 0):
    with session_scope() as db:
        r = db.query(model).offset(skip).limit(limit).all()
        return r

Can you help me to understand whats is happing?

Hi,

I tried your yahoo finance api notebook example. Apparently, the yahoo fetch is not working anymore. It says "
RemoteDataError: No data fetched using 'YahooDailyReader'". Could you please check it out? thanks