1、hashlib hash加密
import hashlib
md5 = hashlib.md5()
md5.update("MisHou is a beautiful girl")
print md5.digest()
print md5.hexdigest()
print md5.block_size
print md5.digest_size
print '-' * 25, '-' * 25
print hashlib.new('md5', "MisHou is a beautiful girl").hexdigest()
print hashlib.new('sha1', "MisHou is a beautiful girl").hexdigest()
random.random()用于生成一个0到1之间的随机数:0 <= n < 1.0;
random.uniform(a, b),用于生成一个指定范围内的随机符点数,两个参数其中一个是上限,一个是下限。min(a,b) <= n <= max(a,b);
randdom.randint(a, b), 用于生成一个指定范围内的整数,其中a是下限,b是上限: a<= n <= b;
random.randrange(start, stop, step), 从指定范围内,按指定基数递增的集合获取一个随机数;
random.choice(sequence), 从序列中获取一个随机元素;
random.shuffle(x), 用于将一个列表中的元素打乱;
random.sample(sequence, k), 从指定序列中随机获取指定长度的片断;
import random print random.uniform(1,10) print random.uniform(10,1) print random.randint(1,10) print random.randint(10,10) print random.randrange(1,10,3) print random.choice('abflsajldfjsal') list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] random.shuffle(list) print list slice = random.sample(list, 3) print slice print list运行结果:
3.52553147752 9.32707157558 8 10 1 f [1, 5, 6, 7, 2, 4, 3, 8, 10, 9] [1, 5, 4] [1, 5, 6, 7, 2, 4, 3, 8, 10, 9]