[Solved] Find the error in this code snippet:f = open('data.txt', 'r') print(f.read()) # forgot to close the fileHow can a context manager fix this? | Python

Python - Context Managers

Find the error in this code snippet:

f = open('data.txt', 'r')
print(f.read())
# forgot to close the file

How can a context manager fix this?

AUse <code>with open('data.txt', 'r') as f:</code> to auto-close

BAdd <code>f.close()</code> after print

CUse <code>open('data.txt', 'r')</code> without assignment

DNo fix needed, code is correct

Step-by-Step Solution

Solution:

Step 1: Identify missing resource cleanup
The file is opened but never closed, risking resource leaks.
Step 2: Use context manager for automatic closing
Using 'with' ensures the file closes automatically after the block ends, even if errors occur.
Final Answer:
Use with open('data.txt', 'r') as f: to auto-close -> Option A
Quick Check:
Context managers auto-close files = Use with open('data.txt', 'r') as f: to auto-close [OK]

Quick Trick: Use 'with' to avoid forgetting to close files [OK]

Common Mistakes:

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