use fallbackloader in n3fit_exec

Author: tgiani

n3fit/src/n3fit/scripts/n3fit_exec.py

@@ -19,11 +19,11 @@
 from validphys.config import Config, ConfigError, Environment, EnvironmentError_
 from validphys.core import FitSpec
 from validphys.utils import yaml_safe
-from validphys.loader import Loader
+from validphys.loader import FallbackLoader, HyperscanNotFound
 from validphys.api import API
 from validphys.hyperoptplot import generate_dictionary
 
-loader = Loader()
+loader = FallbackLoader()
 
 N3FIT_FIXED_CONFIG = dict(use_cuts='internal', use_t0=True, actions_=[], allow_legacy_names=False)
 
@@ -251,7 +251,10 @@ def produce_trials(self, trial_specs={}):
         if not trial_specs:
             return {}
         else:
-            hyperscan = loader.check_hyperscan(trial_specs['hyperscan'])
+            try:
+                hyperscan = loader.check_hyperscan(trial_specs['hyperscan'])
+            except HyperscanNotFound as e:
+                log.warning(e)
             dict_trials = generate_dictionary(hyperscan.tries_files[1].parent,"average")
             hyperopt_dataframe = pd.DataFrame(dict_trials)
             n_termalization = trial_specs['thermalization']