Logging application use in python?

Question

I'd like to log every time someone uses my Flask app. I'd ideally have a log that looks something like this

Timestamp
923829832
929299292
999993939

With a list of Unix time stamps that would represent each time a user had accessed the application. What's a good way to do this?

Do the simplest thing that could possibly work, and see how it goes. — Open AI - Opting Out
– Open AI - Opting Out, Commented Mar 20, 2015 at 18:43
Your HTTP server already produces such logs; that's what access logging is for. Why do you need additional timestamps? — Martijn Pieters
– Martijn Pieters, Commented Mar 20, 2015 at 18:46

Jon Bloom · Accepted Answer · 2015-03-22 02:51:29Z

1

You could use Flask's after_request decorator.

For example:

import datetime
import time

@app.after_request
def log():
    with open("app.log", "a") as log:
        date = datetime.datetime.now()
        log.write(time.mktime(dt.timetuple()))

This will open a log file after each request, and log the timestamp to the end of it.

answered Mar 22, 2015 at 2:51

Jon Bloom

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