INIT FUNCTION IN PYTHON| QA SDET | TEST AUTOMATION
🔹 What is __init__?
_init_ is the constructor method in Python classes.
It runs automatically when a new object is created.
Used to initialize instance variables.
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✅ Basic Syntax:
class Person:
def __init__(self, name, age):
self.name = name # instance variable
self.age = age
Usage:
p = Person("Alice", 25)
print(p.name) # Alice
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🟩 Key Points:
It is similar to constructors in other languages like Java/C++.
self refers to the current object (mandatory first parameter).
You can overload _init_ using default arguments:
class Book:
def __init__(self, title="Unknown"):
self.title = title
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🟦 When is _init_ called?
Every time you create an object:
obj = Book("Python") # _init_ is automatically called