4.1.3 字符串常量
- Python标准库string中定义数字字符、标点符号、英文字母、大小写字母等常量
>>> import string
>>> string.digits
'0123456789'
>>> string.punctuation
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
>>> string.ascii_letters
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> string.ascii_lowercase
'abcdefghijklmnopqrstuvwxyz'
>>> string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
- 随机密码生成原理
>>> import string
>>> x = string.digits + string.ascii_letters + string.punctuation
>>> x
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
>>> import random
>>> ''.join([random.choice(x) for i in range(8)])
'r=PU~4@<'
>>> ''.join([random.choice(x) for i in range(8)])
'P7c@r@*.'
>>> ''.join([random.choice(x) for i in range(8)])
'=*-F9<_