code: def test_multicycle():
      G = nx.MultiDiGraph()
      G.add_edges_from([(0, 1), (0, 1)])
      assert not nx.is_tree(G)
      assert nx.is_directed_acyclic_graph(G)
  
imports: import pytest
  import networkx
label_desc: Use image node_id 3 for calling a global function with example usage: test_multicycle() without return types