$ python write.py output_file
output_file: Could not open file.  Creating a new one.
Enter person ID number: 111
Enter name: John
Enter email address (blank for none): [email protected]
Enter a phone number (or leave blank to finish): 001001001
Is this a mobile, home, or work phone? mobile
Enter a phone number (or leave blank to finish): 001001011
Is this a mobile, home, or work phone? work
Enter a phone number (or leave blank to finish): 

$ python read.py output_file 
Person ID: 111
  Name: John
  E-mail address: [email protected]
  Mobile phone #: 
001001001
  Work phone #: 
001001011