Pylint JSON report to HTML
A pylint JSON report file to HTML: pylint is used to generate a JSON report, and this tool will transform this report into an HTML document:
usage: pylint-json2html [-h] [-o FILENAME] [-e OUTPUT_ENCODING] [-t FILENAME] [-f FORMAT] [FILENAME] Transform Pylint JSON report to HTML positional arguments: FILENAME Pylint JSON report input file (or stdin) optional arguments: -h, --help show this help message and exit -o FILENAME, --output FILENAME Pylint HTML report output file (or stdout) -e ENCODING, --encoding ENCODING Encoding used to write output file (if not stdout); default to utf-8 -t FILENAME, --template FILENAME Jinja2 custom template to generate report -f FORMAT, --input-format FORMAT Pylint JSON Report input type (json or jsonextended)
Since its 1.7 version, Pylint does not provide an HTML output format. The release notes say that:
It was lately a second class citizen in Pylint, being mostly neglected. Since we now have the JSON reporter, it can be used as a basis for building more prettier HTML reports than what Pylint can currently generate. This is part of the effort of removing cruft from Pylint, by removing less used features.
And I agree with that statements. Few people use the HTML reports, and pylint is getting old. Its core features are complex and they require a lot of times and efforts - and I am thankful for that software to exist in the first place!
So here it is: a plugin to fulfill my own needs. I share it as open-source because why not?
To install this tool, use pip:
(venv) $ pip install pylint-json2html
You can always download the sources from the github repository, and use the
setup.py file to
develop, but I would not recommend that
unless you plan to contribute to this small project of mine.
My favorite way of using
pylint-json2html is this one:
(venv) $ pylint my_package | pylint-json2html -o pylint.html
Provided that you configure your Pylint config file with:
But you can generate first a JSON file, then use
pylint-json2html to read it:
(venv) $ pylint your_package > pylint.json (venv) $ pylint-json2html -o pylint.html pylint.json
You can also redirect
(venv) $ pylint-json2html pylint.json > pylint.html
You can specify the output encoding used to write to your file. Note that you can't do that with stdout (you will have to configure your environment's locale if you want to control that):
(venv) $ pylint-json2html -o pylint.html -e utf-8 pylint.json
This is especially usefull when your locale is something like
latin1, and you want to make sure your output file is properly written as
utf-8 (as it should be when working with Python file).
Actually, I lied about my favorite way, it is this one:
(venv) $ pylint my_package | pylint-json2html -f jsonextended -o pylint.html
With this Pylint configuration:
[MASTER] load-plugins=pylint_json2html [REPORTS] output-format=jsonextended
pylint_json2html is a Pylint plugin that adds a new output format:
jsonextended. By default, the
json format contains only a list of messages,
and this new format contains also metrics, such the number of analysed
statements, or the list of dependencies.
The configuration above can be tested using the command line instead:
(venv) $ pylint --load-plugins=pylint_json2html \ --output-format=jsonextended your_package > pylint.json
Then, you will be able to use the JSON extended report to generate an HTML report:
(venv) $ pylint-json2html -f jsonextended -o pylint.html pylint.json
This plugin uses a Jinja2 template to generate the HTML output, but you may
need your own template. For that purpose, you can use the option
-t/--template, like this:
(venv) $ pylint-json2html -f jsonextended -t custom.tpl -o pylint.html pylint.json
In your template you have access to a
report.score: score given by pylint, available only with
report.previous_score: previous score given by pylint, available only with
report.modules: a list of 2-value tuple:
module.name: name of the module
module.path: path to the module's file
messages value is a list of dict, each with the following keys:
In your template you have access to a
metrics dict with the following keys:
paths. Each of them contains a dict.
The default template contains that header:
So if you want to use a different output encoding, make sure that:
- you can actually encode the characters from pylint's output with that encoding
- and also that you use your own custom template to change that meta tag, otherwise that might not look very good in a browser
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