Added messages if ThinLayers lack a specific dependencies

Also added options for installation

pyenzyme/thinlayers/__init__.py

@@ -1,16 +1,21 @@
+import warnings
+
 from .TL_Base import BaseThinLayer
+from .TL_Strenda import ThinLayerStrendaML
 
 try:
     from .TL_Pysces import ThinLayerPysces
-except ModuleNotFoundError:
+except ModuleNotFoundError as e:
+    print(
+        "%s - ThinLayerCopasi now returns 'None', please provide the dependencies to use this module." % str(e)
+    )
     ThinLayerPysces = None
 
 try:
     from .TL_Copasi import ThinLayerCopasi
-except ModuleNotFoundError:
+except ModuleNotFoundError as e:
+    print(
+        "%s - ThinLayerCopasi now returns 'None', please provide the dependencies to use this module." % str(e)
+    )
     ThinLayerCopasi = None
 
-try:
-    from .TL_Strenda import ThinLayerStrendaML
-except ModuleNotFoundError:
-    ThinLayerStrendaML = None

requirements.txt

@@ -16,4 +16,6 @@ pyDaRUS
 openpyxl
 numexpr
 seaborn
-plotly
+plotly
+pysces
+lmfit

setup.py

@@ -41,14 +41,23 @@
         'openpyxl',
         'numexpr',
         'seaborn',
-        'plotly'
+        'plotly',
     ],
     extras_require={
         'test': [
             'pytest-cov'
         ],
-        'examples': [
-            'xmltodict'
-        ]
+        'copasi': [
+            'python-copasi'
+        ],
+        'pysces': [
+            'pysces',
+            'lmfit'
+        ],
+        'all': [
+            'python-copasi',
+            'pysces',
+            'lmfit'
+        ] 
     },
 )