试图使用urllib与标题，但我一直得到这个错误：TypeError：一个浮动是必需的。我正在使用python 3.4

Question

我一直在尝试使用自定义标头发送请求，但是python不停地给出这个错误消息，我会发生什么错误？ 这里是我的代码与蟒蛇充分反应起来：

代码

import urllib.request 
import urllib.parse 

url = 'https://nytimes.com/' 

user_agent = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64)' 
values = {'name': 'Kromanion Krank', 'location': 'Finland', 'language': 'Python'} 
headers = {'User-Agent': user_agent} 
data = urllib.parse.urlencode(values) 
data = data.encode('ascii') 
html_str = urllib.request.urlopen(url, data, headers) 
html_txt = html_str.text 
print(html_txt) 

输出错误

Traceback (most recent call last): 
    File "C:/Users/fpt84/PycharmProjects/WebC/TEST.py", line 11, in <module> 
    html_str = urllib.request.urlopen(url, data, headers) 
    File "C:\Python34\lib\urllib\request.py", line 161, in urlopen 
    return opener.open(url, data, timeout) 
    File "C:\Python34\lib\urllib\request.py", line 464, in open 
    response = self._open(req, data) 
    File "C:\Python34\lib\urllib\request.py", line 482, in _open 
    '_open', req) 
    File "C:\Python34\lib\urllib\request.py", line 442, in _call_chain 
    result = func(*args) 
    File "C:\Python34\lib\urllib\request.py", line 1226, in https_open 
    context=self._context, check_hostname=self._check_hostname) 
    File "C:\Python34\lib\urllib\request.py", line 1183, in do_open 
    h.request(req.get_method(), req.selector, req.data, headers) 
    File "C:\Python34\lib\http\client.py", line 1137, in request 
    self._send_request(method, url, body, headers) 
    File "C:\Python34\lib\http\client.py", line 1182, in _send_request 
    self.endheaders(body) 
    File "C:\Python34\lib\http\client.py", line 1133, in endheaders 
    self._send_output(message_body) 
    File "C:\Python34\lib\http\client.py", line 963, in _send_output 
    self.send(msg) 
    File "C:\Python34\lib\http\client.py", line 898, in send 
    self.connect() 
    File "C:\Python34\lib\http\client.py", line 1279, in connect 
    super().connect() 
    File "C:\Python34\lib\http\client.py", line 871, in connect 
    self.timeout, self.source_address) 
    File "C:\Python34\lib\socket.py", line 504, in create_connection 
    sock.settimeout(timeout) 
TypeError: a float is required 

Answer 1

的urllib.request.urlopen（从https://docs.python.org/3/library/urllib.request.html#urllib.request.urlopen）签名是：

urllib.request.urlopen(url, data=None, [timeout, ]*, cafile=None, capath=None, cadefault=False, context=None) 

你的第三个“头文件”参数是gett ING传入的urlopen

的timeout说法你需要使用一个Request对象做你想要什么：

req = urllib.request.Request(url, data, headers) 
resp = urllib.request.urlopen(req) 

从你的代码示例（我也不得不修改响应的使用）

import urllib.request 
import urllib.parse 

url = 'https://nytimes.com/' 

user_agent = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64)' 
values = {'name': 'Kromanion Krank', 'location': 'Finland', 'language': 'Python'} 
headers = {'User-Agent': user_agent} 
data = urllib.parse.urlencode(values) 
data = data.encode('ascii') 
request = urllib.request.Request(url, data, headers) 
resp = urllib.request.urlopen(request) 
html_txt = resp.read().decode('UTF-8') 
print(html_txt)