探究random.sample生成的序列中元素是否可重複

不會重複，進行如下實驗得到該答案，若有錯誤，定當改正。

>>> ls = range(100)
>>> random.sample(ls, 99)
[6, 60, 68, 52, 39, 1, 28, 96, 31, 54, 18, 33, 20, 14, 13, 7, 26, 99, 36, 41, 80, 12, 23, 55, 92, 61, 9, 27, 57, 40, 72, 87, 94, 24, 93, 4, 56, 62, 74, 75, 95, 34, 83, 44, 45, 37, 30, 46, 25, 15, 8, 21, 29, 88, 35, 49, 63, 97, 98, 48, 71, 84, 81, 10, 82, 38, 43, 67, 70, 42, 66, 2, 64, 85, 89, 3, 11, 76, 90, 22, 59, 77, 51, 50, 91, 53, 47, 78, 16, 65, 73, 69, 0, 19, 86, 32, 5, 79, 17]
>>> r = random.sample(ls, 99)
>>> c = []
>>> for i in range(100):
...     c.append(r.count(i))
...     if r.count(i)>1:
...         print(str(i)+'出現過兩次')
...
>>> c
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
>>> len(c)
100