# Maybe it's not Python that sucks, maybe it's my code

- Institution: CERN
- Department: IT Lightning Talks (ITLT)
- Speaker: Sebastian WITOWSKI
- Year: 2015
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3017407)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Did you know that in Python integers from -5 to 257 are preallocated? Reusing them 1000 times, instead of allocating memory for a bigger integer, saves a whopping 1 millisecond of code's execution time! Isn't that thrilling? Well, before you get that crazy, learn some basic performance tricks that you can start using today..

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## Lectures

1. [Maybe it's not Python that sucks, maybe it's my code](https://invisiblenetwork.ai/learn/cern/3017407/618bf259e8ac), 7 min (CERN's player)