Dictionary popitem，dictionarypopitem,#The popitem

Dictionary popitem，dictionarypopitem,#The popitem

#The popitem method is similar to list.pop. Unlike list.pop, however, popitem pops #off a random item because dictionaries don't have a 'last element' or any order #whatsoever. This may be very useful if you want to remove and process the items one #by one in an efficient way (without retrieving a list of the keys first):d = {'url': 'http://www.python.org', 'spam': 0, 'title': 'Python Web Site'}print d.popitem()print d#Although popitem is similar to the list method pop, there is no dictionary #equivalent of append. Because dictionaries have no order, such a method wouldn't #make any sense.