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Previous Year Question (PYQs)

What is the correct file mode that opens preexisting file in read and write mode?




Solution

Solution: - `"r+b"` or `"rb+"` → open **existing file** for both reading and writing (no truncation). - `"w+b"` or `"wb+"` → open file for reading and writing but **creates/truncates** file. - `"ab"` → append binary mode. Hence, the correct mode for **existing file in read-write** is `"r+b"`.

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