python去掉空格常用方式有哪些? python编程怎样去掉空格
python\u51e0\u79cd\u53bb\u6389\u5b57\u7b26\u4e32\u4e2d\u95f4\u7a7a\u683c\u7684\u65b9\u6cd5\u4e00\u3001strip()\u65b9\u6cd5\uff1a\u53bb\u9664\u5b57\u7b26\u4e32\u5f00\u5934\u6216\u7ed3\u5c3e\u7684\u7a7a\u683c
>>> a = " a b c "
>>> a.strip()
'a b c'
\u4e8c\u3001lstrip()\u65b9\u6cd5\uff1a\u53bb\u9664\u5b57\u7b26\u4e32\u5f00\u5934\u7684\u7a7a\u683c
>>> a = " a b c "
>>> a.lstrip()
'a b c '
\u4e09\u3001rstrip()\u65b9\u6cd5\uff1a\u53bb\u9664\u5b57\u7b26\u4e32\u7ed3\u5c3e\u7684\u7a7a\u683c
>>> a = " a b c "
>>> a.rstrip()
' a b c'
\u56db\u3001replace()\u65b9\u6cd5\uff1a\u53ef\u4ee5\u53bb\u9664\u5168\u90e8\u7a7a\u683c\uff0c\u4e3b\u8981\u7528\u4e8e\u5b57\u7b26\u4e32\u7684\u66ff\u6362
>>> a = " a b c "
>>> a.replace(" ", "")
'abc'
\u4e94\u3001join()\u65b9\u6cd5+split()\u65b9\u6cd5\uff1a\u53ef\u4ee5\u53bb\u9664\u5168\u90e8\u7a7a\u683c\uff0cjoin\u4e3a\u5b57\u7b26\u4e32\u5408\u6210\u4f20\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u5217\u8868\uff0csplit\u7528\u4e8e\u5b57\u7b26\u4e32\u5206\u5272\uff0c\u53ef\u4ee5\u6309\u89c4\u5219\u8fdb\u884c\u5206\u5272\u3002
>>> a = " a b c "
>>> b = a.split() # \u5b57\u7b26\u4e32\u6309\u7a7a\u683c\u5206\u5272\u6210\u5217\u8868
>>> b ['a', 'b', 'c']
>>> c = "".join(b) # \u4f7f\u7528\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\u5408\u6210\u5217\u8868\u5185\u5bb9\u751f\u6210\u65b0\u7684\u5b57\u7b26\u4e32
>>> c 'abc'
# \u5feb\u6377\u7528\u6cd5
>>> a = " a b c "
>>> "".join(a.split())
'abc'
\u5904\u7406\u5b57\u7b26\u4e32\u65f6\u7ecf\u5e38\u8981\u5b9a\u5236\u5316\u53bb\u6389\u65e0\u7528\u7684\u7a7a\u683c\uff0cpython
\u4e2d\u8981\u4e48\u7528\u5b58\u5728\u7684\u5e38\u89c4\u65b9\u6cd5\uff0c\u6216\u8005\u7528\u6b63\u5219\u5904\u7406\uff0c\u90a3\u4e48python\u7f16\u7a0b\u600e\u6837\u53bb\u6389\u7a7a\u683c?python\u53bb\u6389\u7a7a\u683c\u5e38\u7528\u65b9\u5f0f\u5177\u4f53\u6709\u54ea\u4e9b\u5462?\u4eca\u5929\u5c31\u4e00\u8d77\u6765\u4e86\u89e3\u4e0b\u5427!
1.去掉左边空格
string = " * it is blank space test * "
print (string.lstrip())
result:
* it is blank space test *
2.去掉右边空格
string = " * it is blank space test * "
print (string.rstrip())
result:
* it is blank space test *
3.去掉左右两边空格
string = " * it is blank space test * "
print (string.strip())
result:
* it is blank space test *
4.去掉所有空格
有两种方式
eg1：调用字符串的替换方法把空格替换成空
string = " * it is blank space test * "
str_new = string.replace(" ", "")
print str_new
result:
*itisblankspacetest*
eg2：正则匹配把空格替换成空
import re
string = " * it is blank space test * "
str_new = re.sub(r"\s+", "", string)
print str_new
result:
*itisblankspacetest*
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