[Solved] Identify the problem in this code snippet:class Sample: def __init__(self, value): self.value = value def __len__(self): print(self.value) s = Sample(10) print(len(s)) | Python

Python - Magic Methods and Operator Overloading

Identify the problem in this code snippet:

class Sample:
    def __init__(self, value):
        self.value = value
    def __len__(self):
        print(self.value)
s = Sample(10)
print(len(s))

Aprint(len(s)) should be print(s.__len__())

BMissing return statement in __init__

Clen() cannot be used on custom objects

D__len__ should return an integer, not print

Step-by-Step Solution

Solution:

Step 1: Understand __len__ method requirements
__len__ must return an integer representing length, not print anything.
Step 2: Analyze the code behavior
Here __len__ prints value but returns None, so print(len(s)) outputs None and prints 10 separately.
Final Answer:
__len__ should return an integer, not print -> Option D
Quick Check:
__len__ must return int, not print [OK]

Quick Trick: __len__ must return length as int, not print it [OK]

Common Mistakes:

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