How Python implements the queue

The example in this article describes how Python implements the queue. Share to everyone for your reference. The implementation method is as follows:

#!/usr/bin/env python queue = [] def enQ ():   queue.append (Raw_input (' Enter new string: '). Strip ()) #调用list的列表的pop () function. Pop (0) for the first element of the list Def DeQ ():   If len (queue) = = 0:     print ' cannot pop from an empty queue! '   else:     print ' Removed [', Queue.pop (0), '] ' Def viewq ():   print Queue CMDs = {' E ': EnQ, ' d ': DeQ, ' V ': viewq} def SH Owmenu ():   PR = "" "   (E) nqueue   (D) equeue   (V) iew   (Q) uit     Enter choice:" "While   True: While     True:       try:         choice = raw_input (pr). Strip () [0].lower ()       except (Eoferror, Keyboardinterrupt , Indexerror):        choice = ' Q '       print ' \nyou picked: [%s] '% choice       if choice not in ' Devq ':         print ' Invali d option, try again '       else:         break     if choice = = ' Q ': Break     Cmds[choice] () if __name__ = = ' __main_ _ ':   ShowMenu ()

Hopefully this article will help you with Python programming.

