Computer Science for IGCSE & O level - Programming (Section 11 - No. 30)
What does the 'x' mode do when you open a file?
Opens the file for reading.
Opens the file for writing; creates a new file if it does not exist.
Creates the file if it does not exist and opens it for writing.
Opens the file in append mode.
Giải thích
'x' creates a new file and opens it for writing if the file doesn't already exist. If it does, it will raise an error.