author | Nicolas Chauvat <nicolas.chauvat@logilab.fr> |
Wed, 13 Mar 2019 11:06:46 +0100 | |
changeset 12889 | bbf3e56b43fe |
parent 11057 | 0b59724cb3f2 |
permissions | -rw-r--r-- |
from __future__ import print_function try: rtype, = __args__ except ValueError: print('USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>') print() graph = {} for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype): graph.setdefault(fromeid, []).append(toeid) from logilab.common.graph import get_cycles for cycle in get_cycles(graph): print('cycle', '->'.join(str(n) for n in cycle))