刪除空白字符串中的所有小寫字母python

Question

如何從字符串中刪除所有空格並在python中使所有字符都爲小寫字母？

此外，我可以添加此操作的字符串原型就像我可以在JavaScript？

Answer 1

''.join(c.lower() for c in s if not c.isspace()) 

不.Python不是Ruby。

Answer 2

>>> string=""" a b  c 
... D E   F 
...      g 
... """ 
>>> ''.join( i.lower() for i in string.split() ) 
'abcdefg' 
>>> 

OR

>>> ''.join(map(str.lower, string.split()) ) 
'abcdefg' 

Answer 3

這裏使用的解決方案正則表達式：

>>> import re 
>>> test = """AB cd KLM 
    RST l 
    K""" 
>>> re.sub('\s+','',test).lower() 
    'abcdklmrstlk' 

Answer 4

怎麼樣一個簡單快速答案嗎？沒有map，沒有for環路，...

>>> s = "Foo Bar " * 5 
>>> s 
'Foo Bar Foo Bar Foo Bar Foo Bar Foo Bar ' 
>>> ''.join(s.split()).lower() 
'foobarfoobarfoobarfoobarfoobar' 
>>> 

[Python的2.7.1]

>python -mtimeit -s"s='The quick brown Fox jumped over the lazy dogs'" "''.join(c.lower() for c in s if not c.isspace())" 
100000 loops, best of 3: 11.7 usec per loop 

>python27\python -mtimeit -s"s='The quick brown Fox jumped over the lazy dogs'" "''.join( i.lower() for i in s.split() )" 
100000 loops, best of 3: 3.11 usec per loop 

>python27\python -mtimeit -s"s='The quick brown Fox jumped over the lazy dogs'" "''.join(map(str.lower, s.split()) )" 
100000 loops, best of 3: 2.43 usec per loop 

>\python27\python -mtimeit -s"s='The quick brown Fox jumped over the lazy dogs'" "''.join(s.split()).lower()" 
1000000 loops, best of 3: 1 usec per loop