defending的博客

一：In [28]: data=[random.randint(1,20) for _ in range(30)]In [29]: d = dict.fromkeys(data,0)In [32]: for i in data:    ...:     d[i] += 1二：In [34]: from collections import CounterIn [

一：In [76]: d = {x:random.randint(60,100) for x in 'abcdefg'}In [86]: l=list(zip(d.values(),d.keys()))In [87]: l=sorted(l)#从小到大排列二：In [97]: d.items()Out[97]: dict_items([('a', 80), ('b',

In [1]: from random import randint, sampleIn [5]: s1 = {x: randint(1,4) for x in sample('abcdefg', randint(3,6))}In [6]: s2 = {x: randint(1,4) for x in sample('abcdefg', randint(3,6))}In

from collections import OrderedDictfrom random import randintfrom time import timed = OrderedDict()players = list('asdfghjkl')start = time()for i in range(9): input() p = players.pop(r

创建双向队列import collectionsd = collections.deque()append(往右边添加一个元素)import collectionsd = collections.deque()d.append(1)d.append(2)print(d)#输出：deque([1, 2])appendleft（往左边添加一个元素）

https://github.com/Belval/pdf2image   from pdf2image import convert_from_path, convert_from_bytesimport os, time, sysdef pdf2jpg(): try: image = convert_from_path(sys.argv[1...