Python----检测字符串是否是十进制格式的IP地址

来源：互联网发布：vc map数据如何拷贝编辑：程序博客网时间：2024/06/07 14:29

功能描述：检测输入的字符串是否符合IPv4规范的IP

参数：ipStr任意字符串

返回值：True/False

约束：不允许使用正则表达式

IPv4地址范围说明：

A类地址：1.*.*.* 到127.*.*.* 和 0.0.0.0（全网络地址）

B类地址：128.*.*.* 到191.*.*.*

C类地址：192.*.*.* 到223.*.*.*

D类地址：224.*.*.* 到239.255.255.255

E类地址：240.0.0.0 到255.255.255.255

*表示0~255

关键点：字符串、IPv4规范

def checkIPv4(ipStr):  print '+++++++++++++++++++++++++++++++++++++++'  print 'The Input Ip String is =',ipStr  IPv4List  = ipStr.split('.')  print 'Ip String convert to ip List is =',IPv4List  IPv4Count = len(IPv4List)  print 'The Num of IPv4List is =',IPv4Count  if(4!=IPv4Count):    return False  for i in range(0,IPv4Count):    Each_IPv4_List_Len = len(IPv4List[i])    print IPv4List[i],Each_IPv4_List_Len    if Each_IPv4_List_Len < 1 or Each_IPv4_List_Len > 3:      print "Error: The Len of %s is %d" % (IPv4List[i],Each_IPv4_List_Len)      return False        for j in range(0,Each_IPv4_List_Len):      if IPv4List[i][j]<'0' or IPv4List[i][j]>'9':        print "Error: The %s is not only number" % IPv4List[i]        return False    value_of_each_IPv4_List = int(IPv4List[i])    if(value_of_each_IPv4_List<0 or value_of_each_IPv4_List>255):      print "The Number of %s is overflow" % IPv4List[i]      return False  if int(IPv4List[0]) == 0:    if int(IPv4List[1])==0 and int(IPv4List[2])==0 and int(IPv4List[3])==0 :      pass    else:      print "Error: Not all is Zero"      return False  return True    print checkIPv4("192.168.1.1")print checkIPv4("0.0.0.0")print checkIPv4("255.255.255.255")print checkIPv4("1.2.3.a")print checkIPv4("1231.231.3.4")print checkIPv4("0.1.1.1")print checkIPv4("-1.2.3.4")print checkIPv4("*&^.3.%.3")

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