Question

Using python

1. 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 arid the nature of their visit. log should then append a line to the file named filename in the following format: 1 KNAME OF INDIVIDUAL> <NATURE OF VISIT> Additional requirements e 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: 1 Winston Churchill 1 The Queen is expecting me Running logl'log.txt') results in the following exchange: What is your name?: James Bond hat is the nature of your visit?: To save the Queen The file log.txt should now contain: : Winston Churchill I The Queen is expecting me lames Bond | To save the Queen

Answer 1

#!/usr/bin/env python
def insertRecord(name, purpose):
with open('log.txt', 'a') as logFile:
    textToWrite= name + "|" + purpose + '\n' # generate string to append in log file use '\n' for line terminator
    logFile.write(textToWrite) # append string to log file

def getValidInput(str):
while True:
    value = raw_input(str) # get input
    if value.strip() == "": # if input is only white space
      print "Please enter a valid input" # Ask user to provide valid input
    else:
      return value

def main():

     name = getValidInput("Enter your name:")# get visitor name
     purpose = getValidInput("Enter purpose of visit:")#get purpose of visit
     insertRecord(name, purpose)# Update into Log
if __name__ == '__main__':
    main()