python生成随机数、随机字符串
import random
import string
# 随机整数:
print random.randint(1,50)
# 随机选取0到100间的偶数:
print random.randrange(0, 101, 2)
# 随机浮点数:
print random.random()
print random.uniform(1, 10)
# 随机字符:
print random.choice(\'abcdefghijklmnopqrstuvwxyz!@#$%^&*()\')
# 多个字符中生成指定数量的随机字符:
print random.sample(\'zyxwvutsrqponmlkjihgfedcba\',5)
# 从a-zA-Z0-9生成指定数量的随机字符:
ran_str = \'\'.join(random.sample(string.ascii_letters + string.digits, 8))
print ran_str
# 多个字符中选取指定数量的字符组成新字符串:
prin \'\'.join(random.sample([\'z\',\'y\',\'x\',\'w\',\'v\',\'u\',\'t\',\'s\',\'r\',\'q\',\'p\',\'o\',\'n\',\'m\',\'l\',\'k\',\'j\',\'i\',\'h\',\'g\',\'f\',\'e\',\'d\',\'c\',\'b\',\'a\'], 5))
# 随机选取字符串:
print random.choice([\'剪刀\', \'石头\', \'布\'])
# 打乱排序
items = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
print random.shuffle(items)