Trafilatura runs using Python, currently one of the most frequently used programming languages.
This software library/package is tested on Linux, macOS and Windows systems. It is compatible with all recent versions of Python:
Beginners guide: downloading Python
Then you need a version of Python to interact with as well as the Python packages needed for the task. A recent version of Python 3 is necessary. Some systems already have such an environment installed, to check it just run the following command in a terminal window:
$ python3 --version Python 3.8.6 # version 3.6 or higher is fine
In case Python is not installed, please refer to the excellent Djangogirls tutorial: Python installation.
Trafilatura is packaged as a software library available from the package repository PyPI. As such it can notably be installed with
Installing Python packages¶
Please refer to this section for an introduction on command-line usage.
$ pip install trafilatura # pip3 where applicable
This project is under active development, please make sure you keep it up-to-date to benefit from latest improvements:
# to make sure you have the latest version $ pip install -U trafilatura # latest available code base $ pip install -U git+https://github.com/adbar/trafilatura.git
On Mac OS it can be necessary to install certificates by hand if you get errors like
[SSL: CERTIFICATE_VERIFY_FAILED] while downloading webpages: execute
pip install certifi and perform the post-installation step by clicking on
/Applications/Python 3.X/Install Certificates.command. For more information see this help page on SSL errors.
If you installed the library successfully but cannot start the command-line tool, try adding the user-level
bin directory to your
PATH environment variable.
If you are using a Unix derivative (e.g. Linux, OS X), you can achieve this by running the following command:
A few additional libraries can be installed for extended functionality and faster processing: language detection and faster encoding detection: the
cchardet package may not work on all systems but it is highly recommended.
$ pip install cchardet # single package only $ pip install trafilatura[all] # all additional functionality
For infos on dependency management of Python packages see this discussion thread.
Everything works even if not all packages are installed (e.g. because installation fails).
You can also install or update relevant packages separately, trafilatura will detect which ones are present on your system and opt for the best available combination.
Faster encoding detection, also possibly more accurate (especially for encodings used in Asia)
Faster and more precise date extraction with a series of dedicated packages
Language detection on extracted main text
Faster downloads, possibly less robust though
Potentially faster file downloads (not essential)