[Solved] What is the main advantage of using csv.DictReader over csv.reader when reading CSV files? — Ans: It allows accessing data by column names instead of index positions. | Python

Python - Structured Data Files

What is the main advantage of using csv.DictReader over csv.reader when reading CSV files?

AIt writes data back to the CSV file.

BIt reads the entire file into memory at once.

CIt automatically converts all values to integers.

DIt allows accessing data by column names instead of index positions.

Step-by-Step Solution

Solution:

Step 1: Understand csv.reader behavior
csv.reader reads CSV rows as lists, so you access data by index positions.
Step 2: Understand csv.DictReader behavior
csv.DictReader reads rows as dictionaries, letting you access data by column names, which is clearer and safer if column order changes.
Final Answer:
It allows accessing data by column names instead of index positions. -> Option D
Quick Check:
DictReader uses column names for access [OK]

Quick Trick: DictReader uses column names, not positions, for easier access [OK]

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What is the main advantage of using csv.DictReader over csv.reader when reading CSV files?