What is the difference between opening a file in write mode and opening a file in append mode?
Question
What is the difference between opening a file in write mode and opening a file in append mode?
Solution
When you open a file in write mode ('w'), the system will create a new file if it does not exist. If the file does exist, opening it in write mode will erase all existing data in the file and allow you to write new data.
On the other hand, when you open a file in append mode ('a'), the system will also create a new file if it does not exist. However, if the file does exist, opening it in append mode will not erase the existing data. Instead, it allows you to add or 'append' new data at the end of the file, preserving the existing data.
So, the main difference is that write mode ('w') erases all existing data in the file, while append mode ('a') preserves the existing data and adds new data at the end.
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