[Solved] Find the error in this code snippet:from abc import ABC, abstractmethod class Writer(ABC): @abstractmethod def write(self, text): pass class FileWriter(Writer): def write(self):... | Python

Python - Polymorphism and Dynamic Behavior

Find the error in this code snippet:

from abc import ABC, abstractmethod

class Writer(ABC):
    @abstractmethod
    def write(self, text):
        pass

class FileWriter(Writer):
    def write(self):
        print("Writing to file")

fw = FileWriter()

AAttributeError when calling write method

BTypeError because FileWriter's write method signature does not match abstract method

CSyntaxError due to missing abstractmethod decorator

DNo error, FileWriter correctly implements write

Step-by-Step Solution

Solution:

Step 1: Examine the method definitions
Writer's abstract method 'write' requires one parameter 'text'. FileWriter's 'write' has no parameters.
Step 2: Understand abstract method implementation rules
Python's abc module requires that the subclass method matches the abstract method's signature. A mismatch causes TypeError on instantiation.
Final Answer:
TypeError because FileWriter's write method signature does not match abstract method -> Option B
Quick Check:
Method signature mismatch = TypeError on instantiation [OK]

Quick Trick: Method signatures must match abstract methods to avoid TypeError [OK]

Common Mistakes:

Thinking ABCs do not enforce method signatures
Expecting no error despite signature mismatch
Confusing instantiation success with runtime call errors

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More Python Quizzes

Find the error in this code snippet:

Step 1: Examine the method definitions

Step 2: Understand abstract method implementation rules

Final Answer:

Quick Check:

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