[Solved] Find the error in this code snippet:with open('file.txt') as f: for line in file: print(line) — Ans: Variable 'file' is undefined; should use 'f' instead | Python

Python - File Reading and Writing Strategies

Find the error in this code snippet:

with open('file.txt') as f:
    for line in file:
        print(line)

AIndentation error inside the loop

BMissing colon after for loop

CVariable 'file' is undefined; should use 'f' instead

DFile not opened in write mode

Step-by-Step Solution

Solution:

Step 1: Check variable names used in the loop
The file is opened as 'f', but the loop uses 'file' which is undefined.
Step 2: Confirm correct variable usage
Changing 'file' to 'f' fixes the error and allows reading lines properly.
Final Answer:
Variable 'file' is undefined; should use 'f' instead -> Option C
Quick Check:
Use same variable name as in with open = Variable 'file' is undefined; should use 'f' instead [OK]

Quick Trick: Use same variable name from with open in for loop [OK]

Common Mistakes:

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