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Why does NumPy truncate strings when the dtype length is too short?

hard📝 Conceptual Q10 of 15
NumPy - Array Data Types
Why does NumPy truncate strings when the dtype length is too short?
ATo save memory by limiting string size
BBecause NumPy strings have fixed length for performance
CDue to Python string immutability
DBecause variable-length strings are not supported in NumPy
Step-by-Step Solution
Solution:
  1. Step 1: Understand fixed-length string dtype

    NumPy string dtypes have fixed length for each element to optimize memory and speed.
  2. Step 2: Explain truncation reason

    If input strings exceed dtype length, NumPy truncates to fit fixed size, ensuring consistent element size.
  3. Final Answer:

    Because NumPy strings have fixed length for performance -> Option B
  4. Quick Check:

    Fixed-length strings cause truncation for performance [OK]
Quick Trick: NumPy uses fixed-length strings for speed, causing truncation [OK]
Common Mistakes:
  • Thinking truncation is to save memory only
  • Blaming Python string immutability
  • Assuming variable-length strings are supported

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