python 空格替换

python 空格替换

方法一:

#-*-coding:utf-8-*-
class Handle():
    def replaceSpace(self,string):
        if string == None:return None
        if len(string) == 0:return 0
          return string.replace(' ','*')

方法二

#线性复杂度
#-*-coding:utf-8-*-
class Handle():
    def replaceSpace(self,string):
        if string == None:return None
        if len(string) == 0:return 0
        result = ''
        for s in string:
            if s.isspace():
                result = result+'*'
            else:
                result = result+s
        return result

#测试用例
strhandle = Handle()
string_list = ['',None,'This is a string for test !']
for string in string_list:
    string = strhandle.replaceSpace(string)
    print string
#结果：
>>> 
0
None
This*is*a*string*for*test*!