LLD - Design — Splitwise (Expense Sharing)
Which of the following is the correct way to define an Expense class constructor in Python?
Which of the following is the correct way to define an Expense class constructor in Python?
easy📝 Conceptual Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall Python constructor syntax
Python constructors use __init__ method with self parameter.Step 2: Check options for correct syntax
Only def __init__(self, amount, paid_by): uses __init__ correctly with self and parameters.Final Answer:
def __init__(self, amount, paid_by): -> Option DQuick Check:
Constructor syntax = __init__ [OK]
Quick Trick: Python constructors use __init__ method [OK]
Common Mistakes:
- Using method name same as class
- Missing underscores in __init__
- Using wrong method names like init or __start__
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