[Solved] Find the error in this code:class B: def start(self): self.middle() def middle(self): self.end() def end(self): print('Done') b = B() b.middle() | Python

Python - Methods and Behavior Definition

Find the error in this code:

class B:
    def start(self):
        self.middle()
    def middle(self):
        self.end()
    def end(self):
        print('Done')

b = B()
b.middle()

ANo output because start() is not called

BAttributeError because end() is not defined

CTypeError due to missing arguments

DNo error, prints 'Done'

Step-by-Step Solution

Solution:

Step 1: Check method definitions
All methods are defined correctly with self parameter.
Step 2: Check method call
b.middle() calls self.end(), which prints 'Done'. So output is 'Done' with no error.
Final Answer:
No error, prints 'Done' -> Option D
Quick Check:
Calling middle() runs end() correctly [OK]

Quick Trick: Trace calls from the method you invoke to see output [OK]

Common Mistakes:

MISTAKES

Expecting start() must be called first
Thinking end() is undefined
Confusing missing arguments error

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Find the error in this code:

Step 1: Check method definitions

Step 2: Check method call

Final Answer:

Quick Check:

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