diff options
Diffstat (limited to 'setuptools/build_meta.py')
| -rw-r--r-- | setuptools/build_meta.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/setuptools/build_meta.py b/setuptools/build_meta.py index b9e8a2b3..3c45db72 100644 --- a/setuptools/build_meta.py +++ b/setuptools/build_meta.py @@ -101,8 +101,12 @@ def _file_with_extension(directory, extension): f for f in os.listdir(directory) if f.endswith(extension) ) - file, = matching - return file + try: + return next(matching) + except StopIteration: + raise ValueError('No distribution was found. The distribution was ' + 'possibly not built. Ensure that your `setup.py` ' + 'is not empty and that it calls `setup()`.') def _open_setup_script(setup_script): |