LLD - Design — Splitwise (Expense Sharing)Which of the following is the correct way to define an Expense class constructor in Python?Adef __start__(self, amount, paid_by):Bdef Expense(self, amount, paid_by):Cdef init(self, amount, paid_by):Ddef __init__(self, amount, paid_by):Check Answer
Step-by-Step SolutionSolution:Step 1: Recall Python constructor syntaxPython constructors use __init__ method with self parameter.Step 2: Check options for correct syntaxOnly 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:MISTAKESUsing method name same as classMissing underscores in __init__Using wrong method names like init or __start__
Master "Design — Splitwise (Expense Sharing)" in LLD9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepArchTryChallengeDesignRecallScale
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