Minimal code refractor of connector classes

modules/module_connection.py

@@ -41,10 +41,9 @@ class PhraseBiasExplorerConnector(Connector):
         **kwargs
     ) -> None:
 
-        if 'language_model' in kwargs and 'lang' in kwargs:
-            language_model = kwargs.get('language_model')
-            lang =  kwargs.get('lang')
-        else:
+        language_model = kwargs.get('language_model', None)
+        lang =  kwargs.get('lang', None)
+        if language_model is None or lang is None:
             raise KeyError
 
         self.phrase_bias_explorer = RankSents(
@@ -89,9 +88,8 @@ class CrowsPairsExplorerConnector(Connector):
         **kwargs
     ) -> None:
 
-        if 'language_model' in kwargs:
-            language_model = kwargs.get('language_model')
-        else:
+        language_model = kwargs.get('language_model', None)
+        if language_model is None:
             raise KeyError
         
         self.crows_pairs_explorer = CrowsPairs(