试着翻译

>>> import string
>>> print '\t\r\n  hello \r\n world \t\r\n'

  hello 
 world  
>>> tr = string.maketrans(string.whitespace, ' '*len(string.whitespace))
>>> '\t\r\n  hello \r\n world \t\r\n'.translate(tr)
'     hello    world    '
>>> '\t\r\n  hello \r\n world \t\r\n'.translate(tr).replace(' ', '')
'helloworld'

前导空格和尾随空格:

s = '   foo    \t   '
print s.strip() # prints "foo"

否则，正则表达式工作:

import re
pat = re.compile(r'\s+')
s = '  \t  foo   \t   bar \t  '
print pat.sub('', s) # prints "foobar"

对于两边的空格，使用str.strip:

s = "  \t a string example\t  "
s = s.strip()

对于右边的空白，使用str.rstrip:

s = s.rstrip()

对于左边的空白，使用str.lstrip:

s = s.lstrip()

你可以提供一个参数将任意字符剥离到这些函数中，如下所示:

s = s.strip(' \t\n\r')

这将从字符串两侧剥离任何空格、\t、\n或\r字符。

上面的例子只从字符串的左边和右边删除字符串。如果你也想从字符串中间删除字符，请尝试re.sub:

import re
print(re.sub('[\s+]', '', s))

这应该打印出来:

astringexample

(re.sub(' +'， ' '，(my_str。取代(' \ n ',' ')))). 带()

这将删除所有不需要的空格和换行符。希望这对你有所帮助

import re
my_str = '   a     b \n c   '
formatted_str = (re.sub(' +', ' ',(my_str.replace('\n',' ')))).strip()

这将导致:

'a b \n c'将被更改为'a bc '

    something = "\t  please_     \t remove_  all_    \n\n\n\nwhitespaces\n\t  "

    something = "".join(something.split())

输出:

please_remove_all_whitespaces

将Le Droid的评论添加到答案中。 用空格隔开:

    something = "\t  please     \t remove  all   extra \n\n\n\nwhitespaces\n\t  "
    something = " ".join(something.split())

输出:

请删除所有额外的空格

#how to trim a multi line string or a file

s=""" line one
\tline two\t
line three """

#line1 starts with a space, #2 starts and ends with a tab, #3 ends with a space.

s1=s.splitlines()
print s1
[' line one', '\tline two\t', 'line three ']

print [i.strip() for i in s1]
['line one', 'line two', 'line three']




#more details:

#we could also have used a forloop from the begining:
for line in s.splitlines():
    line=line.strip()
    process(line)

#we could also be reading a file line by line.. e.g. my_file=open(filename), or with open(filename) as myfile:
for line in my_file:
    line=line.strip()
    process(line)

#moot point: note splitlines() removed the newline characters, we can keep them by passing True:
#although split() will then remove them anyway..
s2=s.splitlines(True)
print s2
[' line one\n', '\tline two\t\n', 'line three ']