pypa#257: initialize platforms as list

jeroendecroos · Jan 21, 2020 · 8a1901c · 8a1901c
1 parent e664cdd
commit 8a1901c
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/packaging/tags.py b/packaging/tags.py
@@ -328,8 +328,7 @@ def compatible_tags(
     """
     if not python_version:
         python_version = sys.version_info[:2]
-    if not platforms:
-        platforms = _platform_tags()
+    platforms = list(platforms or _platform_tags())
     for version in _py_interpreter_range(python_version):
         for platform_ in platforms:
             yield Tag(version, "none", platform_)