olca-schema 2.4.0

A package for reading and writing data sets in the openLCA schema format.

olca-schema

This is a package for reading and writing data sets in the openLCA schema format version 2. It provides a typed class model of the schema elements, methods for reading and writing them in the JSON format, reading and writing data sets in zip packages, and some utility methods.

Usage

The package is published on PyPI and can be installed with pip:

pip install olca-schema

Here is a small example that creates a package that can be imported into openLCA 2:

import olca_schema as o
import olca_schema.zipio as zipio

# create a unit group and flow property
units = o.new_unit_group('Units of mass', 'kg')
kg = units.units[0]
mass = o.new_flow_property('Mass', units)

# create a product flow and a process with the product as output
steel = o.new_product('Steel', mass)
process = o.new_process('Steel production')
output = o.new_output(process, steel, 1, kg)
output.is_quantitative_reference = True

# prints the Json string of the process
print(process.to_json())

# write a zip package with the data sets
with zipio.ZipWriter('path/to/example.zip') as w:
    for entity in [units, mass, steel, process]:
        w.write(entity)