Generalize __len__() support (#517)

wikibaseintegrator/models/claims.py

@@ -118,15 +118,15 @@ def get_json(self) -> Dict[str, List]:
                 del json_data[property]
         return json_data
 
-    def __len__(self):
-        return len(self.claims)
-
     def __iter__(self):
         iterate = []
         for claim in self.claims.values():
             iterate.extend(claim)
         return iter(iterate)
 
+    def __len__(self):
+        return len(self.claims)
+
 
 class Claim(BaseModel):
     DTYPE = 'claim'

wikibaseintegrator/models/forms.py

@@ -40,6 +40,9 @@ def get_json(self) -> List[Dict]:
 
         return json_data
 
+    def __len__(self):
+        return len(self.forms)
+
 
 class Form(BaseModel):
     def __init__(self, form_id: Optional[str] = None, representations: Optional[Representations] = None, grammatical_features: Optional[Union[str, int, List[str]]] = None, claims: Optional[Claims] = None):

wikibaseintegrator/models/language_values.py

@@ -104,6 +104,9 @@ def __contains__(self, language: str) -> bool:
     def __iter__(self):
         return iter(self.values.values())
 
+    def __len__(self):
+        return len(self.values)
+
 
 class LanguageValue(BaseModel):
     def __init__(self, language: str, value: Optional[str] = None):

wikibaseintegrator/models/senses.py

@@ -37,6 +37,9 @@ def get_json(self) -> List[Dict]:
 
         return json_data
 
+    def __len__(self):
+        return len(self.senses)
+
 
 class Sense(BaseModel):
     def __init__(self, sense_id: Optional[str] = None, glosses: Optional[Glosses] = None, claims: Optional[Claims] = None):

wikibaseintegrator/models/sitelinks.py

@@ -26,6 +26,9 @@ def from_json(self, json_data: Dict[str, Dict]) -> Sitelinks:
 
         return self
 
+    def __len__(self):
+        return len(self.sitelinks)
+
 
 class Sitelink(BaseModel):
     def __init__(self, site: Optional[str] = None, title: Optional[str] = None, badges: Optional[List[str]] = None):