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Which of the following Python code snippets correctly checks if LangChain is installed by printing its version?

easy📝 Syntax Q12 of 15
LangChain - Fundamentals
Which of the following Python code snippets correctly checks if LangChain is installed by printing its version?
Aimport langchain print(langchain.__version__)
Bimport langchain print(langchain.version())
Cfrom langchain import version print(version)
Dimport langchain print(langchain.version)
Step-by-Step Solution
Solution:
  1. Step 1: Understand how to access package version

    Most Python packages store their version in the __version__ attribute.
  2. Step 2: Use correct syntax to print version

    Import the package and print langchain.__version__ to get the version string.
  3. Final Answer:

    import langchain\nprint(langchain.__version__) -> Option A
  4. Quick Check:

    Use __version__ attribute = B [OK]
Quick Trick: Use __version__ attribute to get package version [OK]
Common Mistakes:
  • Calling version() as a function which does not exist
  • Importing version directly which is not a module
  • Using langchain.version without parentheses or attribute

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