[Solved] Find the error in this code snippet:try: open('file.txt') except IOError: print('File error') except FileNotFoundError: print('File not found') | Python

Python - Custom Exceptions

Find the error in this code snippet:

try:
    open('file.txt')
except IOError:
    print('File error')
except FileNotFoundError:
    print('File not found')

Aopen() needs a mode argument

BIOError should be replaced with Exception

CNo error, code is correct

DFileNotFoundError should come before IOError

Step-by-Step Solution

Solution:

Step 1: Understand exception hierarchy between IOError and FileNotFoundError
FileNotFoundError is a subclass of IOError.
Step 2: Check order of except blocks
The more specific exception (FileNotFoundError) must come before the more general (IOError) to avoid unreachable code.
Final Answer:
FileNotFoundError should come before IOError -> Option D
Quick Check:
Specific exceptions must precede general ones [OK]

Quick Trick: Place child exceptions before parent exceptions in except blocks [OK]

Common Mistakes:

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