Check for dict

tools/src/scie_pants/pants_version.py

@@ -8,11 +8,10 @@
 import logging
 import os
 import urllib.parse
-from typing import Any, Dict, List
 from dataclasses import dataclass
 from pathlib import Path
 from subprocess import CalledProcessError
-from typing import Callable, Iterator
+from typing import Any, Callable, Dict, Iterator, List
 from xml.etree import ElementTree
 
 import tomlkit
@@ -43,9 +42,11 @@ def pants_find_links_option(self, pants_version_selected: Version) -> str:
         )
         return f"--python-repos-{option_name}={operator}['{self.find_links}']"
 
+
 class TagNotFoundError(Exception):
     pass
 
+
 def determine_find_links(
     ptex: Ptex,
     pants_version: str,
@@ -120,7 +121,7 @@ def determine_tag_version(
         github_api_url = (
             f"https://api.github.com/repos/pantsbuild/pants/git/refs/tags/{urllib.parse.quote(tag)}"
         )
-        github_releases_url="https://github.com/pantsbuild/pants/releases"
+        github_releases_url = "https://github.com/pantsbuild/pants/releases"
         headers = (
             {"Authorization": f"Bearer {github_api_bearer_token}"}
             if github_api_bearer_token
@@ -129,9 +130,9 @@ def determine_tag_version(
         github_api_response: Dict[str, Any]
         try:
             github_api_response = ptex.fetch_json(github_api_url, **headers)
-            # If the response is a list, multiple matches were found, which means the supplied tag
-            # is not an exact match against any tag
-            if isinstance(github_api_response, list):
+            # If the response is not a dict, it typically means multiple matches were found, which
+            # means the supplied tag is not an exact match against any tag
+            if not isinstance(github_api_response, dict):
                 raise TagNotFoundError(f"Could not find Pants tag {tag} in {github_releases_url}")
         except CalledProcessError as e:
             raise TagNotFoundError(f"Could not find Pants tag {tag} in {github_releases_url}: {e}")