You are running a Python script that is supposed to write data to an open file, but discover that the file contents are being erased each time the script runs. What is most likely the issue?
A) The file was opened using a mode string other than 'a'.
B) The file is truncated by default with the write() method.
C) The file is erased when the script uses the close() method.
D) The file must be opened using a mode string of 'rw'.

Question

Quizplus · Accepted Answer

When a file is opened in Python using a mode other than 'a' (append mode), such as 'w' (write mode), the file's contents are erased before new data is written. Opening a file in 'a' mode appends the new data to the end of the file without erasing the existing contents.

You Are Running a Python Script That Is Supposed to Write