lalinference_pipe_utils.py: minor python 3 fix for roq runs.

lalinference/python/lalinference/lalinference_pipe_utils.py

@@ -608,9 +608,10 @@ def get_roq_component_mass_priors(path, roq_paths, roq_params, key, gid=None,sim
     return m1_priors, m2_priors, trigger_mchirp
 
 def get_roq_mass_freq_scale_factor(mc_priors, trigger_mchirp, force_flow=None):
-    mc_priors_keys_int = map(lambda k : int(k[:-1]), mc_priors.keys())
-    roq_min = mc_priors.keys()[np.argmin(mc_priors_keys_int)]
-    roq_max = mc_priors.keys()[np.argmax(mc_priors_keys_int)]
+    mc_priors_keys_list = list(mc_priors.keys())
+    mc_priors_keys_int = [int(seglen[:-1]) for seglen in mc_priors_keys_list]
+    roq_min = mc_priors_keys_list[np.argmin(mc_priors_keys_int)]
+    roq_max = mc_priors_keys_list[np.argmax(mc_priors_keys_int)]
     mc_max = mc_priors[roq_min][1]
     mc_min = mc_priors[roq_max][0]
     scale_factor = 1.