python怎么去除文本多余空格 python 去除字符串中的空格
python\u4e2d\u5982\u4f55\u53bb\u6389\u5b57\u7b26\u4e32\u7684\u7a7a\u683c1.strip()\uff1a\u628a\u5934\u548c\u5c3e\u7684\u7a7a\u683c\u53bb\u6389
2.lstrip()\uff1a\u628a\u5de6\u8fb9\u7684\u7a7a\u683c\u53bb\u6389
3.rstrip()\uff1a\u628a\u53f3\u8fb9\u7684\u7a7a\u683c\u53bb\u6389
4.replace('c1','c2')\uff1a\u628a\u5b57\u7b26\u4e32\u91cc\u7684c1\u66ff\u6362\u6210c2\u3002\u6545\u53ef\u4ee5\u7528replace(' ','')\u6765\u53bb\u6389\u5b57\u7b26\u4e32\u91cc\u7684\u6240\u6709\u7a7a\u683c
5.split()\uff1a\u901a\u8fc7\u6307\u5b9a\u5206\u9694\u7b26\u5bf9\u5b57\u7b26\u4e32\u8fdb\u884c\u5207\u7247\uff0c\u5982\u679c\u53c2\u6570num \u6709\u6307\u5b9a\u503c\uff0c\u5219\u4ec5\u5206\u9694 num \u4e2a\u5b50\u5b57\u7b26\u4e32
\u4e09\u79cd\u65b9\u6cd5\u5982\u4e0b\uff1a
\u7528replace\u51fd\u6570\uff1a
your_str.replace(' ', '')a = 'hello word' # \u628aa\u5b57\u7b26\u4e32\u91cc\u7684word\u66ff\u6362\u4e3apythona.replace('word','python') # \u8f93\u51fa\u7684\u7ed3\u679c\u662fhello python\u7528split\u65ad\u5f00\u518d\u5408\u4e0a\uff1a
''.join(your_str.split())\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u5b8c\u6210\u66ff\u6362\uff1a
import re strinfo = re.compile('word')b = strinfo.sub('python',a) print b # \u7ed3\u679c\uff1ahello python
'''
在Python中字符串处理函数里有三个去空格的函数：
strip 同时去掉左右两边的空格
lstrip 去掉左边的空格
rstrip 去掉右边的空格
'''
#具体示例如下：
a=" gho stwwl "
print(a.lstrip())
print(a.rstrip())
print(a.strip())
#去掉中间多余的空格
s=''
for i in range(len(a)):
if a[i]==' ' and i<len(a)-1 and a[i+1]==' ':
continue
s+=a[i]
print(s)#配合strip()使用，全部多余空格去掉
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绛旓細import re str="aaa\n\nbbb\n\n\n"print re.sub('[\r\n\f]{2,}','\n',str)
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