[Tutor] container class

Tim Wilson wilson@isis.visi.com
Sat, 2 Feb 2002 22:20:17 -0600 (CST)

Hi everyone,

I've just put together a couple classes here investigating how to do a
container class. Does the following seem reasonable? There isn't yet
enough for any sort of useful program, but I think it shows my train of
thought. Any feedback appreciated. 


# PyAddress, a simple program to organize names and addresses
# by Tim Wilson <wilson@visi.com>

class AddressBook:
    def __init__(self):
        """Initialize an empty address book."""
        self.contents = {}
    def addEntry(self, entry):
        """Add an entry to the address book.
        entry -- An AddressBookEntry instance
        self.contents[entry.ln + entry.fn] = entry
    def printBook(self):
        """Print the contents of the address book."""
        print "%-20s %-12s" % ('Name', 'Phone')
        print '='*33
        k = self.contents.keys()
        for name in k:
            entry = self.contents[name]
            print entry

class AddressBookEntry:
    def __init__(self, fn, ln, phone='', email=''):
        """Construct a new entry for the address book.
        fn -- first name
        ln -- last name
        phone -- phone number
        email -- email address
        self.fn = fn
        self.ln = ln
        self.phone = phone
        self.email = email

    def __str__(self):
        """One-line version of entry info."""
        name = self.ln + ', ' + self.fn
        return "%-20s %-12s" % (name, self.phone)
    def details(self):
        """Print the full entry record."""
        print self.fn, self.ln
        print '=' * (len(self.fn) + len(self.ln) + 1)
        print "Phone: %s" % self.phone
        print "Email: %s" % self.email

Tim Wilson      |   Visit Sibley online:   | Check out:
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