题解 | #识别有效的IP地址和掩码并进行分类统计#

import re
result = [0,0,0,0,0,0,0]
d_list = []
def isValidIp(ip_list):
	for x in ip_list:
		if not x:
			return 5,-1
	for x in ip_list:
		if int(x) > 255:
			return 5,-1
	if 0 < int(ip_list[0]) < 127:
		if int(ip_list[0]) == 10:
			return 6,0
		return 0,-1
	elif 127 < int(ip_list[0]) < 192:
		if int(ip_list[0]) == 172 and 15 < int(ip_list[1]) < 32:
			return 6,1
		return 1,-1
	elif 191 < int(ip_list[0]) < 224:
		if int(ip_list[0]) == 192 and int(ip_list[1]) == 168:
			return 6,2
		return 2,-1
	elif 223 < int(ip_list[0]) < 240:
		return 3,-1
	elif 239 < int(ip_list[0]) < 256:
		return 4,-1
	elif 0 == int(ip_list[0]) or 127 == int(ip_list[0]):
		return 7,-1
	else:
		return 5,-1

def isValidWeb(web_list):
	pattern = "^[1]+[0]+$"
	web_str = ""
	first_index0 = 0
	for x in web_list:
		if not x:
			return 5,-1
	for x in web_list:
		if int(x) > 255:
			return 5,-1
	for x in web_list:
		y = str(bin(int(x)))[2:].rjust(8,"0")
		web_str += y
	match_list = re.match(pattern,web_str)
	if match_list:
		return True
	else:
		return False
for line in sys.stdin:
	if "~" in line:
		a,b = line.split("~")
		ip_list = a.split(".")
		web_list = b.split(".")
		web_valid = isValidWeb(web_list)
		a,b = isValidIp(ip_list)
		if a == 7:
			# print("ignore ",line)
			pass
		elif not web_valid:
			# print("web error",line)
			result[5] += 1
		elif a == -1:
			pass
			# print("something error", line)
		elif a == 6:
			result[6] += 1
			result[b] += 1
		elif a == 5:
			result[5] += 1
			# print("ip error",line)	
		else:
			result[a] += 1
	else:
		break
for x in result:
	print(x,end=" ")