Simplify Topology.getNumChains()

b5330c31 · John Chodera (MSKCC) · eb2f347a · b5330c31
Commit b5330c31 authored Oct 26, 2015 by John Chodera (MSKCC)
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wrappers/python/simtk/openmm/app/topology.py wrappers/python/simtk/openmm/app/topology.py +1 -1

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--- a/wrappers/python/simtk/openmm/app/topology.py
+++ b/wrappers/python/simtk/openmm/app/topology.py
@@ -89,7 +89,7 @@ class Topology(object):

        Returns: the number of chains in the Topology
        """
-        nchain = sum(1 for c in self.chains())
+        nchain = len(self._chains)
        return nchain

    def addChain(self, id=None):