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What will happen if you try to load a non-existent PDF file using PyPDFLoader?

medium📝 component behavior Q5 of 15
LangChain - Document Loading
What will happen if you try to load a non-existent PDF file using PyPDFLoader?
AIt returns an empty list
BIt silently ignores the error and returns None
CIt creates an empty document object
DIt raises a FileNotFoundError
Step-by-Step Solution
Solution:

  1. Step 1: Consider file loading error handling

    Trying to load a file that does not exist triggers a FileNotFoundError in Python.

  2. Step 2: Check PyPDFLoader behavior on missing files

    PyPDFLoader does not catch this error internally, so it propagates the exception.

  3. Final Answer:

    It raises a FileNotFoundError -> Option D

  4. Quick Check:

    Missing file = FileNotFoundError [OK]
Quick Trick: Missing PDF file causes FileNotFoundError exception [OK]
Common Mistakes:
  • Expecting empty list instead of error
  • Thinking it returns None silently
  • Assuming it creates empty documents

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