带元组的Python deque extendleft?
我有一个最大长度为10的带元组的Python deque extendleft?,python,Python,我有一个最大长度为10的deque。可以.extendleft并添加元组。例如: from collections import deque x = deque(maxlen = 10) z = [(1,4),(1,3),(2,5),(7,1),(6,4),(8,2),(9,1),(9,5),(7,3),(8,3)] for y in z: x.append(y) print x x.extendleft((6,7)) print x 返回: deque([(1, 4), (1,
deque
。可以.extendleft
并添加元组。例如:
from collections import deque
x = deque(maxlen = 10)
z = [(1,4),(1,3),(2,5),(7,1),(6,4),(8,2),(9,1),(9,5),(7,3),(8,3)]
for y in z:
x.append(y)
print x
x.extendleft((6,7))
print x
返回:
deque([(1, 4), (1, 3), (2, 5), (7, 1), (6, 4), (8, 2), (9, 1), (9, 5), (7, 3), (8, 3)], maxlen=10)
deque([7, 6, (1, 4), (1, 3), (2, 5), (7, 1), (6, 4), (8, 2), (9, 1), (9, 5)], maxlen=10)
我试过:
配对=(6,7)
x、 延伸英尺(对)
同样的结果
In [7]: x.extendleft([(6,7)])
In [8]: x
Out[8]: deque([(6, 7), (1, 4), (1, 3), (2, 5), (7, 1), (6, 4), (8, 2), (9, 1), (9, 5), (7, 3)], maxlen=10)
或者更简单一点:
In [10]: x.appendleft((6, 7))
或者更简单一点:
In [10]: x.appendleft((6, 7))