9.8 Handling Exceptions

Various types of exceptions can occur when you work with files, including:

  • A FileNotFoundError occurs if you attempt to open a non-existent file for reading with the 'r' or 'r+' modes.

  • A PermissionsError occurs if you attempt an operation for which you do not have permission. This might occur if you try to open a file that your account is not allowed to access or create a file in a folder where your account does not have permission to write, such as where your computer’s operating system is stored.

  • A ValueError (with the error message 'I/O operation on closed file.') occurs when you attempt to write to a file that has already been closed.

9.8.1 Division by Zero and Invalid Input

Let’s revisit two exceptions that you ...

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