参考代码:
mport re
strInput = '310.1'
strList = re.findall('^[\-\+]?\d+\.?\d+$',strInput)
print(strList)
strInput2 = 'aa310.0.1'
strList2 = re.search('[\-\+]?\d+\.?\d+',strInput2)
print(strList2.group())
strInput3 = '310.0.1'
strList3 = re.match('[\-\+]?\d+\.?\d+',strInput3)
print(strList3.group())
strInput4 = '310.13'
strList4 = re.match('^[\-\+]?\d+\.?\d+$',strInput4)
if(strList4):
res=strList4.group()
print(res)
else:
print("Err")
标签：group,处理,re,正则表达式,res,strList4,strInput,print,字符串
From： https://www.cnblogs.com/exesoft/p/16939357.html