Question

按照来自here的代码，我有一个IP地址检查器。但是，不是输出IP地址，而是输出[]。代码：

import urllib.request
import re

print("we will try to open this url, in order to get IP Address")

url = "http://checkip.dyndns.org"

print(url)

request = urllib.request.urlopen(url).read()

theIP = re.findall(r"d{1,3}.d{1,3}.d{1,3}.d{1,3}", request.decode('utf-8'))


print("your IP Address is: ",  theIP)

预期输出：

we will try to open this url, in order to get IP Address
http://checkip.dyndns.org
your IP Address is: 40.74.89.185

那里的IP地址不是我的，它来自HERE 。

实际输出：

we will try to open this url, in order to get IP Address
http://checkip.dyndns.org
your IP Address is:  []

我刚刚从网站上复制了内容，然后更正了错误。我做错了什么。请帮助...

我的python版本空闲3.8。

Answer 1

证明您的正则表达式出现错误：我已经更新了代码，并使用了请求get：

findall将返回元素列表，因为仅使用[0]即可获得一个IP返回值。

from requests import get
import re
iphtml = get('http://checkip.dyndns.org').text
theIP = re.findall( r'[0-9]+(?:\.[0-9]+){3}', iphtml)
print(f"Your IP is: {theIP[0]}")

您的代码已更新：

import urllib.request
import re

print("we will try to open this url, in order to get IP Address")

url = "http://checkip.dyndns.org"

print(url)

request = urllib.request.urlopen(url).read()

theIP = re.findall(r'[0-9]+(?:\.[0-9]+){3}', request.decode('utf-8'))


print("your IP Address is: ",  theIP[0])

IP地址检查器未输出IP地址

1 个答案: