Python - Constructors and Object Initialization
You want to create a class that stores a user's name and age, but age should default to 18 if not provided. How should you define the constructor?
You want to create a class that stores a user's name and age, but age should default to 18 if not provided. How should you define the constructor?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand default parameter values
Python allows default values in parameters, so age=18 sets default age.Step 2: Check constructor definition
def __init__(self, name, age=18): correctly sets age default and requires name.Final Answer:
def __init__(self, name, age=18): -> Option BQuick Check:
Default parameter syntax = param=default [OK]
Quick Trick: Use default values in parameters for optional arguments [OK]
Common Mistakes:
- Setting default inside method body instead of parameter
- Not handling missing age properly
- Using incorrect syntax for defaults
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