[Solved] What will be the output of this code?with open('data.txt', 'w') as f: f.write('Hello') with open('data.txt', 'a') as f: f.write(' World') with open('data.txt', 'r') as f: print(f.read()) | Python

Python - File Reading and Writing Strategies

What will be the output of this code?

with open('data.txt', 'w') as f:
    f.write('Hello')
with open('data.txt', 'a') as f:
    f.write(' World')
with open('data.txt', 'r') as f:
    print(f.read())

AHello

BHello World

C World

DError: file not found

Step-by-Step Solution

Solution:

Step 1: Write 'Hello' with 'w' mode
File is created or overwritten with 'Hello'.
Step 2: Append ' World' with 'a' mode
' World' is added after existing 'Hello'.
Step 3: Read and print file content
Reading shows combined string 'Hello World'.
Final Answer:
Hello World -> Option B
Quick Check:
Write then append = combined text [OK]

Quick Trick: Write with 'w', then append with 'a' adds text [OK]

Common Mistakes:

Assuming append overwrites
Expecting only 'Hello' output
Thinking file is missing

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What will be the output of this code?

Step 1: Write 'Hello' with 'w' mode

Step 2: Append ' World' with 'a' mode

Step 3: Read and print file content

Final Answer:

Quick Check:

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