Slides for my proposed talk at PyCon India, 2015.

1. Avoiding common pitfalls of
datetime from a webapp's
perspective
PyCon India - 2015
Indradhanush Gupta

2. About me
● Love Python + Emacs
● ZeroMQ, Twisted, Django
● Graduated in 2014
● Software Engineer @ Instamojo

3. Target Audience
● Beginner in Python
● Web developer
● And anyone else!

4. import datetime
● Naive vs Aware
● Datetime storage in Postgres
● Should I ever use a naive datetime object?

5. import pytz
● Adding timezone info to naive datetime
● Converting datetime to another timezone
● Do not use datetime.datetime.replace

6. import production
● Examples from real life and experience.

7. import production
● 10 AM for the user != 10 AM in your DB

8. import freezegun
● Writing tests that need to mock datetime
● Using freezegun instead of mock
● Examples

9. import extras
● timedelta
● dateutil.relativedelta
● dateutil.parser

10. import questions

11. Thank You!