Implement extraction command

Requires !9 (merged)

Closes #9 (closed)

dan/datasets/extract/extract_from_arkindex.py

@@ -266,9 +266,11 @@ class ArkindexExtractor:
 
             count = 0
             for entity in entities["results"]:
-                start_token, end_token = self.tokens[
-                    entity["entity"]["metas"]["subtype"]
-                ]
+                matching_tokens = self.tokens[entity["entity"]["metas"]["subtype"]]
+                start_token, end_token = (
+                    matching_tokens["start"],
+                    matching_tokens["end"],
+                )
                 text, count = insert_token(
                     text,
                     count,
@@ -402,10 +404,6 @@ def run(
     if load_entities:
         assert tokens, "Please provide the entities to match."
 
-    # Get and initialize the parameters.
-    os.makedirs(IMAGES_DIR, exist_ok=True)
-    os.makedirs(LABELS_DIR, exist_ok=True)
-
     # Login to arkindex.
     assert (
         "ARKINDEX_API_URL" in os.environ