python基础===string模块常量

In [8]: import string
 
In [9]: dir(string)
 
In [10]: string.ascii_letters
Out[10]: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
In [11]: string.ascii_lowercase
Out[11]: 'abcdefghijklmnopqrstuvwxyz'
 
In [12]: string.ascii_uppercase
Out[12]: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
 
In [13]: string.digits
Out[13]: ''
 
In [14]: string.punctuation
Out[14]: '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
 
In [15]: string.whitespace
Out[15]: '\t\n\x0b\x0c\r '