def extend(self,x):
h = None
if len(self)>0:
h = self[0]
deque.extend(self, x)
if ( len(self)>0 and h!=self[0] ):
self[0].handle_head_of_queue()
def invertBinaryTree(tree):
que = [tree]
while len(que) > 0:
current = que.popleft()
if current is None:
continue
current.left, current.right = current.right, current.left
que.extend([current.left, current.right])
def solve(self):
# use priority queue for weight
queue = deque()
queue.append(self.state)
while not queue.isEmpty():
current = queue.popleft()
if current.is_goal():
# possible print
return current
deque.extend(current.get_children())
def extendleft(self, iterable):
deque.extend(self, iterable)
for i in range(0, len(iterable)):
self.__size_sema.release()
#functions of deque.
from collections import deque
deque = deque([1,2,3])
#extend vs aappend
print('Extend function.')
deque.extend('456')
deque.extend([7,8,9])
print(deque)
print('Append function.')
deque.append('abc')
deque.append(['d','e','f'])
print(deque)
#other functions.
print('Search index.')
# index(ele, beg, end)
print(deque.index(7,5,9))
print('Count')
print(deque.count(0))
print('Extend Left')
deque.extendleft([0])
def extendleft(self, iterable):
deque.extend(self, iterable)
for i in range(0, len(iterable)):
self.__size_sema.release()
user_name = userlist.popleft() userlist1 = ["1", "2", "3"] user_name1 = userlist1.pop(0) print(user_name1) print(user_name) from queue import Queue yyy = Queue() print(yyy.empty()) yyy.put(5) print(yyy.empty()) yyy.get(2, 0.5) print(yyy.qsize()) # deque GIL是线程安全的，list不是线程安全的 # deque的拷贝是浅拷贝，虽然id不同,但是dequeue里是一个对象的时候，也会改变 user_deque = deque(["bobby1", ["bobby2", "bobby3"], "bobby3"]) user_deque_copy = user_deque.copy() user_deque[1].append(1) user_deque[0] = "1" print(user_deque) print(user_deque_copy) ''' # 深拷贝 import copy deep=copy.deepcopy(user_deque) # 动态的扩容 deque.extend() ''' list1 = [1, 2, 5, 8, 9] list1.pop(0) list1.insert(0, 5) print(list1)
def CMD_rpush(self, key, *values):
print("pushing - ", key, values)
deque = self.dictionary.get(key, collections.deque())
deque.extend(values)
self.dictionary[key] = deque
return b":%d\r\n" % (len(deque), )
def rpush(self, key, *values):
deque = self.dictionary.get(key, collections.deque())
deque.extend(values)
self.dictionary[key] = deque
return b":%d\r\n" % (len(deque), )
