判断字母

tomer

统计字母出现的次数

1. 
   
2. #!coding=utf-8
   
3. import string
   
4. import sys
   
5. def tongji(str):
   
6.     str1=list(str)
   
7.     str2={}
   
8.     for string in str1:
   
9.         if string.isalpha()==True:
   
10.            str2[string]=str2.get(string,0)+1
    
11.     for string in str2:
    
12.         print("{0} occur {1}".format(string,str2[string]))   
    
13. if __name__=='__main__':
    
14.   f=open("d:\\file.txt","r")
    
15.   for eachline in f:
    
16.      tongji(eachline)
    

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file.txt的内容为：adfeife df的发疯erqapfdanfeiurepoefu832k
f运行结果

1. 
   
2. e occur 6
   
3. d occur 3
   
4. n occur 1
   
5. r occur 2
   
6. 发 occur 1
   
7. o occur 1
   
8. p occur 2
   
9. f occur 7
   
10. 疯 occur 1
    
11. 的 occur 1
    
12. q occur 1
    
13. u occur 2
    
14. i occur 2
    
15. k occur 1
    
16. a occur 3
    

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string.isalpha()把字符"的""疯"都判断成字母了？

tomer

>>> "啊".isalpha()
True
>>>
string.isalpha()不是判断是否为字母吗？

bikong0411

sky-MacBook-Pro➜  /tmp  ᐅ  cat 1.py
#!/usr/bin/env python
#coding: utf-8
print "啊".isalpha()
sky-MacBook-Pro➜  /tmp  ᐅ  python 1.py
False
sky-MacBook-Pro➜  /tmp  ᐅ  echo $LANG
zh_CN.UTF-8

tomer

>>> # -*- coding=UTF-8 -*-
...
>>> "啊".isalpha()
True
>>>

tomer

回复 3# bikong0411


    [root@VM ~]# export LANG=zh_CN.UTF-8
[root@VM ~]# python 3.py
  File "3.py", line 2
SyntaxError: (unicode error) 'utf-8' codec can't decode byte 0xc4 in position 0: invalid continuation byte
[root@VM ~]# more 3.py
#coding=utf-8
print("你".isalpha())
[root@VM ~]#

love_shift

try:
string.letters

1. >>> from collections import Counter
   
2. >>> import string
   
3. >>> s = 'adfeife df的发疯erqapfdanfeiurepoefu832k'
   
4. >>> n = [ x for x in s if x in string.letters ]
   
5. >>> for k,v in Counter(n).iteritems():
   
6. ...     print k,v
   
7. ...
   
8. a 3
   
9. e 6
   
10. d 3
    
11. f 6
    
12. i 2
    
13. k 1
    
14. o 1
    
15. n 1
    
16. q 1
    
17. p 2
    
18. r 2
    
19. u 2

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ssfjhh

1. import string
   
2. import sys

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第一行，已经告诉过你，python自带的str已经有很多功能，包括你要用到的功能，你没有先吧python的基础学好了，就学人家用什么库。

第二个，你知道是什么意思吗？你的代码里就没有用到这个库，你为毛要加这样一行？好玩？

Linux_manne

回复 7# ssfjhh


    说得好。。 我实在是看不下去了..... 碰到问题 自己都不先动动脑子.....

tomer

回复 7# ssfjhh


    加上了，报错与这个有关系吗

tomer

回复 6# love_shift

1. 
   
2. #coding=utf-8
   
3. from collections import Counter
   
4. import string
   
5. s = 'adfeife df吓到 erqapfdanfeiurepoefu832k'
   
6. n = [ x for x in s if x in string.letters ]
   
7. for k,v in Counter(n).iteritems():
   
8.      print(k,v)
   

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Traceback (most recent call last):
  File "E:\pythonspace\p\src\t2.py", line 5, in <module>
    n = [ x for x in s if x in string.letters ]
  File "E:\pythonspace\p\src\t2.py", line 5, in <listcomp>
    n = [ x for x in s if x in string.letters ]
AttributeError: 'module' object has no attribute 'letters'