Question:
Sequence the steps to append data to an existing file and then read the entire file:
(A) Open the file in a+ mode.
(B) Use the read() method to output the contents.
(C) Use the write() or writelines() method to append data.
(D) Seek to the beginning of the file.
Sequence the steps to append data to an existing file and then read the entire file:
(A) Open the file in a+ mode.
(B) Use the read() method to output the contents.
(C) Use the write() or writelines() method to append data.
(D) Seek to the beginning of the file.
(A) Open the file in a+ mode.
(B) Use the read() method to output the contents.
(C) Use the write() or writelines() method to append data.
(D) Seek to the beginning of the file.
Show Hint
When appending and reading a file, always make sure to move the file pointer to the beginning using \texttt{seek(0)} before reading the file after appending data.
Updated On: Feb 16, 2026
- (A), (C), (D), (B)
- (A), (B), (C), (D)
- (B), (A), (C), (D)
- (C), (B), (D), (A)
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Open the file in a+ mode.
To append data to an existing file and then read it, we need to open the file in \texttt{a+} mode. This mode allows both appending and reading the file.
Step 2: Append data using write() or writelines().
Once the file is open in \texttt{a+} mode, we can use the \texttt{write()} or \texttt{writelines()} method to append data to the file.
Step 3: Seek to the beginning of the file.
After appending the data, we need to move the file pointer to the beginning using \texttt{seek(0)}. This allows us to read from the start of the file.
Step 4: Read the file contents using read().
Finally, we use the \texttt{read()} method to read and output the contents of the file from the beginning.
Step 5: Conclusion.
The correct sequence is: 1. (A) Open the file → 2. (C) Append data → 3. (D) Seek to beginning → 4. (B) Read contents.
Final Answer: \[ \boxed{\text{The correct sequence is (A), (C), (D), (B).}} \]
To append data to an existing file and then read it, we need to open the file in \texttt{a+} mode. This mode allows both appending and reading the file.
Step 2: Append data using write() or writelines().
Once the file is open in \texttt{a+} mode, we can use the \texttt{write()} or \texttt{writelines()} method to append data to the file.
Step 3: Seek to the beginning of the file.
After appending the data, we need to move the file pointer to the beginning using \texttt{seek(0)}. This allows us to read from the start of the file.
Step 4: Read the file contents using read().
Finally, we use the \texttt{read()} method to read and output the contents of the file from the beginning.
Step 5: Conclusion.
The correct sequence is: 1. (A) Open the file → 2. (C) Append data → 3. (D) Seek to beginning → 4. (B) Read contents.
Final Answer: \[ \boxed{\text{The correct sequence is (A), (C), (D), (B).}} \]
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