如何检查字符串中的字符是否是字母？蟒蛇 [英] How to check if character in string is a letter? Python

问题描述

 示例：
 
s ='abcdefg'
 s2 ='123abcd'
 s3 ='abcDEFG'
 
s [0] .islower（）= True 
 s2 [0] .islower（）= False 
 s3 [0] .islower（）= True 
   
 
有没有什么办法可以只是询问它是否是除了做.islower（）或.isupper（）之外的一个字符？ 
 
 isalpha（），参见 http://docs.python.org/2/library/stdtypes.html  
 
 
 
举例： 
 
 
 >>> s =a123b
>>>对于s中的char：
 ... print char，char.isalpha（）
 ... 
a True 
 1 False 
 2 False 
 3 False 
b True 
  
 
So I know about islower and isupper, but i can't seem to find out if you can check whether or not that character is a letter?
Example:

s = 'abcdefg'
s2 = '123abcd'
s3 = 'abcDEFG'

s[0].islower() = True
s2[0].islower()= False
s3[0].islower()=True
is there any way to just ask if it is a character besides doing .islower() or .isupper() ?
解决方案
You can use isalpha(), see the docs at http://docs.python.org/2/library/stdtypes.html


An example:
>>> s = "a123b"
>>> for char in s:
...     print char, char.isalpha()
... 
a True
1 False
2 False
3 False
b True


                        
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