pywcmp

WMO Core Metadata Profile Test Suite

pywcmp provides validation and quality assessment capabilities for the WMO WIS Core Metadata Profile (WCMP).

• validation against WCMP 1.3, specifically Part 2, Section 2, implementing an executable test suite against the ATS
• quality assessement against the WCMP Key Performance Indicators

Installation

pip

Install latest stable version from PyPI.

pip3 install pywcmp

From source

Install latest development version.

python3 -m venv pywcmp
cd pywcmp
. bin/activate
git clone https://github.com/wmo-im/pywcmp.git
cd pywcmp
pip3 install -r requirements.txt
python3 setup.py build
python3 setup.py install

Running

From command line:

# fetch version
pywcmp --version

# abstract test suite

# validate metadata against abstract test suite (file on disk)
pywcmp ats validate --file /path/to/file.xml

# validate metadata against abstract test suite (URL)
pywcmp ats validate --url http://example.org/path/to/file.xml

# adjust debugging messages (CRITICAL, ERROR, WARNING, INFO, DEBUG) to stdout
pywcmp ats validate --url http://example.org/path/to/file.xml --verbosity DEBUG

# write results to logfile
pywcmp ats validate --url http://example.org/path/to/file.xml --verbosity DEBUG --logfile /tmp/foo.txt

# key performance indicators

# all key performance indicators at once # note: running KPIs automatically runs the ats
pywcmp kpi validate --url http://example.org/path/to/file.xml --verbosity DEBUG

# all key performance indicators at once, in summary
pywcmp kpi validate --url http://example.org/path/to/file.xml --verbosity DEBUG --summary

# all key performance indicators at once, with scoring rubric grouping
pywcmp kpi validate --url http://example.org/path/to/file.xml --verbosity DEBUG --group

# selected key performance indicator
pywcmp kpi validate --kpi 4 -f /path/to/file.xml -v INFO

Using the API

>>> # test a file on disk
>>> from lxml import etree
>>> from pywcmp.ats import ats
>>> exml = etree.parse('/path/to/file.xml')
>>> # test ATS
>>> ts = ats.WMOCoreMetadataProfileTestSuite13(exml)
>>> ts.run_tests()  # raises ValueError error stack on exception
>>> # test a URL
>>> from urllib2 import urlopen
>>> from StringIO import StringIO
>>> content = StringIO(urlopen('http://....').read())
>>> exml = etree.parse(content)
>>> ts = ats.WMOCoreMetadataProfileTestSuite13(exml)
>>> ts.run_tests()  # raises ValueError error stack on exception
>>> # handle ats.TestSuiteError
>>> # ats.TestSuiteError.errors is a list of errors
>>> try:
...    ts.run_tests()
... except ats.TestSuiteError as err:
...    print('\n'.join(err.errors))
>>> ...
>>> # test KPI
>>> from pywcmp.kpi import WMOCoreMetadataProfileKeyPerformanceIndicators
>>> kpis = WMOCoreMetadataProfileKeyPerformanceIndicators(exml)
>>> results = kpis.evaluate()
>>> results['summary']
>>> # scoring rubric
>>> grouped = group_kpi_results(results)

Development

python3 -m venv pywcmp
cd pywcmp
source bin/activate
git clone https://github.com/wmo-im/pywcmp.git
pip3 install -r requirements.txt
pip3 install -r requirements-dev.txt
python3 setup.py install

Running tests

# via setuptools
python3 setup.py test
# manually
python3 tests/run_tests.py

Releasing

python3 setup.py sdist bdist_wheel --universal
twine upload dist/*

Code Conventions

PEP8

Issues

Issues are managed at https://github.com/wmo-im/pywcmp/issues

Contact

• Tom Kralidis
• Ján Osuský