Edits tag index to find compatible solution for both flake8 and black

shakyground2/import_fdsnws_eq.py

@@ -70,7 +70,8 @@ def fetch_fm(root: ET.Element, ns: dict, preferredfmID: str) -> list:
                     continue
                 v = found.text
                 tag = child.tag
-                tag = tag[tag.index("}") + 1 :]
+                tag_idx = tag.index("}") + 1
+                tag = tag[tag_idx:]
                 try:
                     d[k][tag] = float(str(v))
                 except ValueError:
@@ -114,7 +115,8 @@ def fetch_origin(root, ns: dict, preferredoriginID: str) -> dict:
         d = dict()
         for child in o:
             tag = child.tag
-            tag = tag[tag.index("}") + 1 :]
+            tag_idx = tag.index("}") + 1
+            tag = tag[tag_idx:]
 
             if tag in ("depth", "latitude", "longitude", "time"):
                 v = child.find("ns:value", ns).text