Module Management and Exception Handling PCAD-31 Practice Questions (Page 1)

Questions 1–5

1. 1application · easy

   A data analyst runs a script that reads a CSV file. The script crashes with the following traceback: ``` Traceback (most recent call last): File "script.py", line 3, in <module> data = open('data.csv').read() FileNotFoundError: [Errno 2] No such file or directory: 'data.csv' ``` What is the most likely cause of this error?

   • AThe file is corrupted and cannot be parsed.
   • BThe script does not have permission to read the file.
   • CThe file 'data.csv' does not exist in the current working directory.
   • DThe file is empty and cannot be read.
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2. 2foundation · medium

   A data pipeline reads a CSV file, parses each row, and writes results to a database. The developer wants to catch a FileNotFoundError separately from a ValueError, but handle all other exceptions with a generic fallback. Which except clause structure correctly implements this?

   • Aexcept Exception: ... except FileNotFoundError: ... except ValueError: ...
   • Bexcept FileNotFoundError, ValueError: ... except Exception: ...
   • Cexcept FileNotFoundError: ... except ValueError: ... except Exception: ...
   • Dexcept (FileNotFoundError, ValueError): ... except Exception: ...
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4. 3foundation · easy

   What is the benefit of using a `finally` clause when working with file operations?

   • AIt ensures the file is closed even if an exception occurs during processing
   • BIt prevents the file from being opened
   • CIt automatically converts file contents to strings
   • DIt makes the file read faster
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5. 4foundation · easy

   After executing `import random`, which expression correctly calls the `randint` function from the random module?

   • Arandom.randomint(1, 10)
   • Brandom.randint(1, 10)
   • Cimport.random(1, 10)
   • Drandint(1, 10)
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6. 5foundation · easy

   Why is it beneficial to create custom exception classes?

   • ATo handle specific error scenarios with tailored exception types
   • BTo automatically log errors to a file
   • CTo make the code run faster
   • DTo avoid using try-except blocks
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