[Solved] Identify the error in this Python code for logging to CSV on Raspberry Pi:import csv file = open('log.csv', 'a') writer = csv.writer(file) writer.writerow(['Time', 'Value']) file.close() | Raspberry Pi

Raspberry Pi - Data Logging and Databases

Identify the error in this Python code for logging to CSV on Raspberry Pi:

import csv
file = open('log.csv', 'a')
writer = csv.writer(file)
writer.writerow(['Time', 'Value'])
file.close()

AMissing newline='' in open() causes blank lines in CSV

BUsing 'a' mode instead of 'w' mode is incorrect

Ccsv.writer cannot write lists

Dfile.close() should be called before writer.writerow

Step-by-Step Solution

Solution:

Step 1: Understand newline parameter in open()
When writing CSV on Windows or Raspberry Pi, missing newline='' can add extra blank lines.
Step 2: Check other options
'a' mode is correct for appending, csv.writer accepts lists, and close() must be after writing.
Final Answer:
Missing newline='' in open() causes blank lines in CSV -> Option A
Quick Check:
Use newline='' to avoid blank lines [OK]

Quick Trick: Always use newline='' when opening CSV files for writing [OK]

Common Mistakes:

MISTAKES

Master "Data Logging and Databases" in Raspberry Pi

9 interactive learning modes - each teaches the same concept differently

More Raspberry Pi Quizzes

Identify the error in this Python code for logging to CSV on Raspberry Pi: