https://github.com/pokle/coding-exercise-traffic-counter

Stats about cars that pass a traffic counter 🚗🚙
https://github.com/pokle/coding-exercise-traffic-counter

coding-exercise

Last synced: 2 months ago
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Stats about cars that pass a traffic counter 🚗🚙

• Host: GitHub
• URL: https://github.com/pokle/coding-exercise-traffic-counter
• Owner: pokle
• Created: 2018-05-26T05:49:06.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2018-05-28T10:33:49.000Z (almost 8 years ago)
• Last Synced: 2024-12-29T23:24:30.316Z (about 1 year ago)
• Topics: coding-exercise
• Language: Python
• Homepage:
• Size: 32.2 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Traffic counter

[![Build Status](https://travis-ci.org/pokle/coding-exercise-traffic-counter.svg?branch=master)](https://travis-ci.org/pokle/coding-exercise-traffic-counter)

- Single pass line by line streaming (tested on a large file)

    - Constant memory usage ~12mb ram

    - Can process about 130,000 lines/second on my 2013 macbook pro.

- Current bottleneck is CPU.

## Running it

Ensure you have python 3 installed (brew install python3)

Verify everything's in order by running the tests: `make test`

Then you're good to go:

```

$ python3 traffic_report.py data.file

## Count of cars grouped by date

2016-12-01 179

2016-12-05 81

2016-12-08 134

2016-12-09 4

## Total cars =  398

## Top 3 half hours

2016-12-01T07:30:00 46

2016-12-01T08:00:00 42

2016-12-08T18:00:00 33

## 1.5 hour period with ​least​ cars = 20 cars [2016-12-01T15:00:00 .. 2016-12-01T23:30:00]

```