def filename_all_lower(filehandle, metadata):
    if not filehandle.filename.islower():
        raise UploadError('require lowercase filename')
    return True
A task to properly export a library definition.
dataset/ETHPy150Open justanr/Flask-Transfer/tests/test_validators.py/filename_all_lower--crossover with--dataset/ETHPy150Open hwaf/hwaf/py-hwaftools/hwaf-rules.py/hwaf_export_lib