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How do you correctly define a custom document loader class in Langchain that inherits from the base loader?

easy📝 Syntax Q3 of 15
LangChain - Document Loading
How do you correctly define a custom document loader class in Langchain that inherits from the base loader?
Aclass MyLoader(BaseLoader): def load(self): pass
Bdef MyLoader(): def load(): pass
Cclass MyLoader: def load(self): pass
Dclass MyLoader(BaseLoader): def load(): pass
Step-by-Step Solution
Solution:

  1. Step 1: Inherit from BaseLoader

    Custom loaders must subclass BaseLoader to integrate properly.

  2. Step 2: Define load with self

    The load method must be an instance method with self parameter.

  3. Final Answer:

    class MyLoader(BaseLoader): def load(self): pass -> Option A

  4. Quick Check:

    Inheritance and method signature are key [OK]
Quick Trick: Subclass BaseLoader and define load(self) method [OK]
Common Mistakes:
  • Defining load without self parameter
  • Not inheriting from BaseLoader
  • Using function instead of class

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