change get_qlin_topo to set branch length to 1

Author: kullrich

src/oggmap/qlin.py

@@ -278,7 +278,7 @@ def get_lineage_topo(qt,
                               'PSname']].apply(lambda x: '/'.join(x), axis=1))
     qln = [x.replace(' ', '_').replace('(', '_').replace(')', '_').replace(':', '_') for x in qln]
     #tree = Tree('(' * len(qln) + ''.join([str(x) + '),' for x in qln[1::][::-1]])+str(qln[0])+');')
-    newick_str = '(' * len(qln) + ''.join([str(x) + '),' for x in qln[1::][::-1]]) + str(qln[0]) + ');'
+    newick_str = '(' * len(qln) + ''.join([str(x) + ':1.000),' for x in qln[1::][::-1]]) + str(qln[0]) + ':1.000);'
     tree = Phylo.read(StringIO(newick_str), 'newick')
     return tree