假设我有一份颜色列表,colours = ['red', 'blue', 'green', 'purple'].
然后我希望调用我希望存在的这个python函数random_object = random_choice(colours).现在,如果random_object持有'蓝色',我希望colours = ['red', 'green', 'purple'].
python中是否存在这样的函数?
首先,如果您想要删除它,因为您想要一次又一次地执行此操作,您可能希望random.shuffle()在随机模块中使用它.
random.choice() 选一个,但不删除它.
否则,请尝试:
import random
# this will choose one and remove it
def choose_and_remove( items ):
# pick an item index
if items:
index = random.randrange( len(items) )
return items.pop(index)
# nothing left!
return None
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单程:
from random import shuffle
def walk_random_colors( colors ):
# optionally make a copy first:
# colors = colors[:]
shuffle( colors )
while colors:
yield colors.pop()
colors = [ ... whatever ... ]
for color in walk_random_colors( colors ):
print( color )
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