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Get Line Number

Description​

The get_line_number function retrieves the line number where the most recent exception occurred, if available.

Function Signature:​

def get_line_number() -> int | None:

Parameters​

  • None

Returns​

  • int: The line number where the most recent exception occurred.
  • None: If no exception traceback is available, it returns None.

Example Usage​

try:
    # Example code that raises an exception
    1 / 0
except ZeroDivisionError:
    line_number = get_line_number()
    print(f"Exception occurred at line {line_number}")

Notes​

  • This function uses sys.exc_info() to retrieve information about the most recent exception.
  • If an exception traceback is available, it extracts the line number from the traceback object.
  • If no exception is available (or no traceback is present), it returns None.

Error Handling​

  • This function is designed to handle cases where no exception traceback is available by returning None.