Python - File Handling Fundamentals
You want to read a file and then write new content to it without losing the original data. Which mode should you use to open the file?
You want to read a file and then write new content to it without losing the original data. Which mode should you use to open the file?
hard🚀 Application Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Understand modes that allow reading and writing
'r+' opens file for reading and writing without truncating the file.Step 2: Compare with other modes
'w+' truncates file, 'a' appends only, 'x' creates new file and errors if exists.Final Answer:
'r+' -> Option BQuick Check:
Read/write without truncating = 'r+' = B [OK]
Quick Trick: Use 'r+' to read and write without erasing file [OK]
Common Mistakes:
MISTAKES- Using 'w+' which erases file
- Using 'a' which only appends
- Using 'x' which fails if file exists
Master "File Handling Fundamentals" in Python
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