Which of the following is the correct syntax to append a new transaction record to a list named transactions in Python?

easy🧠 Conceptual Q3 of Q15

LLD - Design — Splitwise (Expense Sharing)

Which of the following is the correct syntax to append a new transaction record to a list named transactions in Python?

Atransactions.insert({'id': 't100', 'amount': 50})

Btransactions.add({'id': 't100', 'amount': 50})

Ctransactions.append({'id': 't100', 'amount': 50})

Dtransactions.push({'id': 't100', 'amount': 50})

Step-by-Step Solution

Solution:

Step 1: Recall Python list methods for adding elements
Python lists use the append() method to add elements at the end.
Step 2: Verify other options
add() is for sets, insert() requires an index, push() is not a Python list method.
Final Answer:
transactions.append({'id': 't100', 'amount': 50}) -> Option C
Quick Check:
Appending to list = append() method [OK]

Quick Trick: Use append() to add items to Python lists [OK]

Common Mistakes:

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