Fix up example for python3

examples/example.py

@@ -1,8 +1,11 @@
+from __future__ import print_function
 import os
 import capnp
+
 this_dir = os.path.dirname(__file__)
 addressbook = capnp.load(os.path.join(this_dir, 'addressbook.capnp'))
 
+
 def writeAddressBook(fd):
     message = capnp.MallocMessageBuilder()
     addressBook = message.initRoot(addressbook.AddressBook)
@@ -33,27 +36,28 @@ def writeAddressBook(fd):
 f = open('example', 'w')
 writeAddressBook(f.fileno())
 
+
 def printAddressBook(fd):
     message = capnp.PackedFdMessageReader(f.fileno())
     addressBook = message.getRoot(addressbook.AddressBook)
 
     for person in addressBook.people:
-        print person.name, ':', person.email
+        print(person.name, ':', person.email)
         for phone in person.phones:
-            print phone.type, ':', phone.number
+            print(phone.type, ':', phone.number)
 
         which = person.employment.which()
-        print which
+        print(which)
 
         if which == addressbook.Person.Employment.Which.UNEMPLOYED:
-            print 'unemployed'
+            print('unemployed')
         elif which == addressbook.Person.Employment.Which.EMPLOYER:
-            print 'employer:', person.employment.employer
+            print('employer:', person.employment.employer)
         elif which == addressbook.Person.Employment.Which.SCHOOL:
-            print 'student at:', person.employment.school
+            print('student at:', person.employment.school)
         elif which == addressbook.Person.Employment.Which.SELF_EMPLOYED:
-            print 'self employed'
-        print
+            print('self employed')
+        print()
 
 f = open('example', 'r')
 printAddressBook(f.fileno())