Source code for pyreason

# Set numba environment variable
import os


package_path = os.path.abspath(os.path.dirname(__file__))



cache_path = os.path.join(package_path, 'cache')



cache_status_path = os.path.join(package_path, '.cache_status.yaml')

os.environ['NUMBA_CACHE_DIR'] = cache_path


from pyreason.pyreason import *
import yaml


with open(cache_status_path) as file:


    cache_status = yaml.safe_load(file)


if not cache_status['initialized']:
    print('Imported PyReason for the first time. Initializing ... this will take a minute')


    graph_path = os.path.join(package_path, 'examples', 'hello-world', 'friends_graph.graphml')


    settings.verbose = False
    load_graphml(graph_path)
    add_rule(Rule('popular(x) <-1 popular(y), Friends(x,y), owns(y,z), owns(x,z)', 'popular_rule'))
    add_fact(Fact('popular-fact', 'Mary', 'popular', [1, 1], 0, 2))
    reason(timesteps=2)

    reset()
    reset_rules()

    # Update cache status
    cache_status['initialized'] = True
    with open(cache_status_path, 'w') as file:
        yaml.dump(cache_status, file)