author | Guillaume Vandevelde <gvandevelde@logilab.fr> |
Mon, 10 Feb 2020 16:56:02 +0100 | |
branch | 3.26 |
changeset 12874 | cc71a801b846 |
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))