范围重复选择

Question

如何确保每次在python中返回的值都是唯一的？我正在使用random.randrange随机范围就像这样-

batter = ("Sammy Slammer","Lonnie Longball","Billy Bomber","Jack Runs","Ricky Redic",)
bnum = random.randrange(0,5)
upnow = batter[bnum]

除了我经常得到复制品外，其他的都有用。。你知道吗

多亏了@编造者-

batter = ("Sammy Slammer","Lonnie Longball","Billy Bomber","Jack Runs","Ricky Redic",)
bnum = random.randrange(0,5)
upnow = batter[bnum]
l = list(batter)
random.shuffle(l)
for upnow in l:
print upnow

以及-

batter = ("Sammy Slammer","Lonnie Longball","Billy Bomber","Jack Runs","Ricky Redic",)
l = list(batter)
random.shuffle(l)
for upnow in l:
print upnow

获取sqlite 3语句引用时出错-

对于反转（x范围）1中的i，len（x）int没有len（）

我缩短了代码，sqlite3在没有洗牌的情况下运行良好。。你知道吗

    bbatter_ai =  (brow["BATTER"])
tab = cab_ai + at_bat
conn.execute("UPDATE batter set AB = ? WHERE BATTER = ?",[tab] + [bbatter_ai])

Answer 1

您可以洗牌玩家列表：

l = list(batter)
random.shuffle(l)
for upnow in l:
    print upnow

空闲：

In [1]: import random

In [2]: batter = ("Sammy Slammer","Lonnie Longball","Billy Bomber","Jack Runs","Ricky Redic",)

In [3]: l = list(batter)

In [4]: random.shuffle(l)

In [5]: for upnow in l:
   ...:     print upnow
   ...:     
Jack Runs
Sammy Slammer
Lonnie Longball
Billy Bomber
Ricky Redic