Does StringIO create a file on disk?

Asked May 02 '20 at 02:31

Active May 02 '20 at 02:31

Viewed 310 times

In the following example:

import sqlite3
from io import StringIO

def init_sqlite_db(app):
    # Read database to tempfile
    con = sqlite3.connect(app.config['SQLITE_DATABASE'])
    tempfile = StringIO()
    for line in con.iterdump():
        tempfile.write('%s\n' % line)
    con.close()
    tempfile.seek(0)

Does io.StringIO cause a temporary file to be created on disk or is it all done in memory?

asked May 02 '20 at 02:31

Paragon512

2

no. it's all in-memory. This is stated quite clearly in the docs, "An in-memory stream for text I/O. " – juanpa.arrivillaga May 02 '20 at 02:32
Just wanted to double-check because of the naming conventions people like to use with it being therefor misleading. – Paragon512 May 02 '20 at 02:34
I've never seen that convention, so I wouldn't really call it a *convention*. Normally, I just see something like `buffer = StringIO()` – juanpa.arrivillaga May 02 '20 at 02:37

Does StringIO create a file on disk?

0 Answers0