Does pandas need to close connection? : <p>When using pandas "read_sql_query", do I need to close the connection? Or should I use a "with" statement? Or can I just use the following and be good?</p>

<pre><code>from sqlalchemy import create_engine
import pandas as pd

sql = """
    SELECT * FROM Table_Name;
    """
engine = create_engine('blah')

df = pd.read_sql_query(sql, engine)

print df.head()
</code></pre>
