| --- a/Lib/packaging/tests/support.py |
| +++ b/Lib/packaging/tests/support.py |
| @@ -146,7 +146,7 @@ class TempdirManager: |
| """ |
| if isinstance(path, (list, tuple)): |
| path = os.path.join(*path) |
| - f = open(path, 'w') |
| + f = open(path, 'w', encoding='utf8') |
| try: |
| f.write(content) |
| finally: |