library · inferred from evidence

unstructured

A library that includes functionality for downloading NLTK packages if not present.

UnboundLocalError 'isalnum' from UnstructuredPDFLoader: upgrade to 0.10.21
UnboundLocalError: local variable 'isalnum' referenced before assignment from UnstructuredPDFLoader: your unstructured install is stale. LangChain does not necessarily pull in the latest unstructured automatically, so the pinned old version
primary2026-09-25 07:22 UTC
unstructured `partition_pdf()` fails with `Resource punkt_tab not found`
NLTK 3.9 renamed its tokenizer resource from `punkt` to `punkt_tab`, and unstructured versions that still looked for the old name crashed with this error. The quick fix: download the resource yourself with `import nltk; nltk.download('punkt
primary2026-09-24 14:56 UTC
unstructured `partition_pdf()` fails with `Resource punkt_tab not found`
NLTK 3.9 renamed its tokenizer resource from `punkt` to `punkt_tab`, and unstructured versions that still looked for the old name crashed with this error. The quick fix: download the resource yourself with `import nltk; nltk.download('punkt
primary2026-09-24 13:58 UTC