Give default values where it makes sense. It allows for quick test runs.

pcigale/creation_modules/dl2014.py

@@ -35,7 +35,7 @@ class DL2014(CreationModule):
             'float',
             "Mass fraction of PAH. Possible values are: 0.47, 1.12, 1.77, "
             "2.50, 3.19, 3.90, 4.58, 5.26, 5.95, 6.63, 7.32.",
-            None
+            2.50
         )),
         ('umin', (
             'float',
@@ -44,20 +44,20 @@ class DL2014(CreationModule):
             "0.700, 0.800, 1.000, 1.200, 1.500, 1.700, 2.000, 2.500, 3.000, "
             "3.500, 4.000, 5.000, 6.000, 7.000, 8.000, 10.00, 12.00, 15.00, "
             "17.00, 20.00, 25.00, 30.00, 35.00, 40.00, 50.00.",
-            None
+            1.0
         )),
         ('alpha', (
             'float',
             "Powerlaw slope dU/dM propto U^alpha. Possible values are: 1.0, "
             "1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, "
             "2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0.",
-            None
+            2.0
         )),
         ('gamma', (
             'float',
             "Fraction illuminated from Umin to Umax. Possible values between "
             "0 and 1.",
-            None
+            0.1
         ))
     ])
 

pcigale/creation_modules/sfh_buat08.py

@@ -44,13 +44,13 @@ class SfhBuat08(CreationModule):
             "float",
             "Rotational velocity of the galaxy in km/s. Must be between 80 "
             "and 360 (included).",
-            None
+            200.
         )),
         ("age", (
             "integer",
             "Age of the oldest stars in the galaxy. The precision "
             "is 1 Myr.",
-            None
+            5000.
         )),
         ("normalise", (
             "boolean",

pcigale/creation_modules/sfhdelayed.py

@@ -34,13 +34,13 @@ class SFHDelayed(CreationModule):
         ("tau_main", (
             "float",
             "e-folding time of the main stellar population model in Myr.",
-            None
+            2000.
         )),
         ("age", (
             "integer",
             "Age of the oldest stars in the galaxy in Myr. The precision "
             "is 1 Myr.",
-            None
+            5000.
         )),
         ("sfr_A", (
             "float",