On Mon, Aug 05, 2019 at 01:49:24PM -0400, Dave via Python-list wrote:
> * Passing connections and cursors - good, bad indifferent? I try to avoid
> passing file handles unless necessary, so I view connections and cursors the
> same.
Connections may be more long-lived, per thread perhaps.
Cursors would generally be throw-away.
Transactions involving several commands may require passing
around of connections and/or cursors, however.
> Best way to establish the connection and cursor, as well as close them? I
> have seen many ways to do this, and know that the with block can be used to
> create a connection and close it automatically, but the same is not true of
> the cursor. Also, using only a with block does not handle any errors as
> well as a try/with. For example:
>
> | try:
> | # Use with block to create connection – it will close self.
> | with sqlite3.connect(path) as conn:
> | cur = conn.cursor()
> | cur.execute(sql_ProjectsTable)
> | cur.close()
> | except Error as e:
> | print(e)
Use of
try:
except:
finally:
may come in handy for clean closure.
Karsten
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