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Which Python code snippet correctly opens 'log.csv' for appending rows with proper newline handling on a Raspberry Pi?

easy📝 Syntax Q3 of 15
Raspberry Pi - Data Logging and Databases
Which Python code snippet correctly opens 'log.csv' for appending rows with proper newline handling on a Raspberry Pi?
Awith open('log.csv', 'a', newline='') as file: writer = csv.writer(file)
Bfile = open('log.csv', 'w') writer = csv.writer(file)
Cwith open('log.csv', 'r') as file: writer = csv.writer(file)
Dfile = open('log.csv', 'a', newline='') writer = csv.writer(file)
Step-by-Step Solution
Solution:
  1. Step 1: Open file in append mode ('a')

    This mode allows adding new data without overwriting existing content.
  2. Step 2: Use 'newline' parameter as empty string

    This prevents extra blank lines in CSV files on Windows and Raspberry Pi.
  3. Step 3: Use 'with' statement

    Ensures proper file closing after writing.
  4. Final Answer:

    Option A -> Option A
  5. Quick Check:

    Append mode + newline='' + with statement [OK]
Quick Trick: Always use 'a' mode with newline='' and 'with' for CSV [OK]
Common Mistakes:
MISTAKES
  • Using 'w' mode which overwrites existing data
  • Omitting newline='' causing blank lines
  • Not using 'with' leading to unclosed files

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