bug/ImportError: cannot import name 'open_filename' from 'pdfminer.utils'

[Antony-M1]

Describe the bug
After installing the unstructured & pdfminer using below commands. I'm getting the following error

!pip install -q unstructured==0.16.8
!pip install -q pdfminer==20191125

Code

from unstructured.partition.pdf import partition_pdf
from unstructured.staging.base import elements_to_json

Error

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ImportError                               Traceback (most recent call last)
[<ipython-input-44-899c36516ea4>](https://localhost:8080/#) in <cell line: 8>()
      6 from langchain.text_splitter import PythonCodeTextSplitter
      7 
----> 8 from unstructured.partition.pdf import partition_pdf
      9 from unstructured.staging.base import elements_to_json
     10 

[/usr/local/lib/python3.10/dist-packages/unstructured/partition/pdf.py](https://localhost:8080/#) in <module>
     34 )
     35 from pdfminer.pdftypes import PDFObjRef
---> 36 from pdfminer.utils import open_filename
     37 from PIL import Image as PILImage
     38 

ImportError: cannot import name 'open_filename' from 'pdfminer.utils' (/usr/local/lib/python3.10/dist-packages/pdfminer/utils.py)

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NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.
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[scanny]

@Antony-M1 Unstructured uses pdfminer.six, not pdfminer and current version is 20231228.

To install unstructured, follow the installation instructions on the repo home page, in your case probably something roughly like:

$ pip install unstructured[pdf]