Hello. I need this in Python. Thank you

, write: A program that implements a logbook, recording the visitors to a place of interest and their visit's purpose. This log book could later be read by another program. Implement a function called log that takes one parameter, filename, the name of a file. You may assume the file is in the current working directory of the program. log should prompt the user for their name and the nature of their visit. log should then append a line to the file named filename in the following format: | Additional requirements: If the user enters empty input, or input that is only whitespace, re-prompt them for valid input before continuing. Your program must not remove previous lines from the file. For example, assume the following is the current contents of a file log.txt: 1Winston Churchill | The Queen is expecting me