bib.bibtexparser.middlewares.block.entry_field_keys_normalize¶

Bases: BlockMiddleware

Normalize field keys to lowercase.

In case of conflicts (e.g. both 'author' and 'Author' exist in the same entry), a warning is emitted, and the last value wins.

Some other middlewares, such as SeparateCoAuthors, assume lowercase key names.

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def __init__(self, allow_inplace_modification: bool = True):
    super().__init__(allow_inplace_modification=allow_inplace_modification, allow_parallel_execution=True)