51Degrees Device Detection Python  4.2Newer Version 4.4

Device Detection services for 51Degrees Pipeline

51Degrees Device Detection Engines

51Degrees v4 Device Detection Python

Developer Documentation | Available Properties


This project contains 51Degrees Device Detection engines that can be used with the Pipeline API.

The Pipeline is a generic web request intelligence and data processing solution with the ability to add a range of 51Degrees and/or custom plug ins (Engines)

This git repository uses submodules, to clone the git repository run:

git clone --recurse-submodules https://github.com/51Degrees/device-detection-python.git

or if already cloned run the following to obtain all sub modules.:

git submodule update --init --recursive


  • Python 3.5+
  • The flask python library to run the web examples
  • Git Large File System (LFS) for sub module device-detection-cxx\device-detection-data
  • Additional requirements are for the on-premise Device-Detection Engine.


  • fiftyone_devicedetection - references both cloud and on-premise packages, contains generic Device-Detection Pipeline Builder.
    • examples - examples for switching between cloud and on-premise.
  • fiftyone_devicedetection_cloud - cloud implementation of the engines.
    • examples - examples for cloud device-detection.
    • tests - tests for the cloud engine and examples.
  • fiftyone_devicedetection_onpremise - uses a native library which is built during setup to provide optimal performance and low latency device detections.
    • examples - examples for on-premise device-detection.
    • tests - tests for the on premise engine and examples.
  • fiftyone_devicedetection_shared - common components used by the cloud and on-premise packages.



To install all packages, run:

python -m pip install fiftyone-devicedetection

The fiftyone-devicedetection package references both cloud and on-premise packages. If you do not want the on-premise engine or cannot meet the requirements for installing on-premise then install the cloud package on its own:

python -m pip install fiftyone-devicedetection-cloud

See the cloud package readme for more details specifics.


It is recommended to use Pipenv when build packages. Pipenv will ensure all the required packages for building and testing are available e.g. cython and flask.

python -m pip install pipenv
pipenv install
pipenv shell

To install packages for development run the following commands:

python -m pip install -e fiftyone_devicedetection_shared/
python -m pip install -e fiftyone_devicedetection_cloud/
cd fiftyone_devicedetection_onpremise/
python setup.py build_clib build_ext
cd ../
python -m pip install -e fiftyone_devicedetection_onpremise/
python -m pip install -e fiftyone_devicedetection/

Alternatively, if you have make installed you can run the make file:

make install

other targets:

  • cloud - only setup packages required for cloud
  • onpremise - only setup packages required for onpremise
  • test - run package tests
  • clean - remove temporary files created when building extensions

For convenience, there is also a powershell setup script called setup.ps1. To run it, you may need to update the execution policy to allow unsigned scripts to execute:

Set-ExecutionPolicy -Scope CurrentUser Bypass


Then, to run an example, navigate into one of the module directories that contain an examples subfolder, e.g.

cd fiftyone_devicedetection_cloud/

Then run an example:

python -m examples.cloud.gettingstarted