Python 3.x：urllib.request 错误

发布于 2024-11-30 09:15:39 字数 1028 浏览 1 评论 0原文

我的代码：

import urllib.request, urllib.parse, urllib.error

def login():
     url = 'http://rsbot.lt/news.php'
     values = {'user_name' : 'Name',
          'user_pass' : 'Password' }

     data = urllib.parse.urlencode(values)
     req = urllib.request.Request(url, data)
     response = urllib.request.urlopen(req)
     return response.read()

login()

我的错误：

 Traceback (most recent call last):
  File "C:\Users\Myrez\Desktop\test.py", line 13, in <module>
login()
 File "C:\Users\Myrez\Desktop\test.py", line 10, in login
response = urllib.request.urlopen(req)
 File "C:\Python32\lib\urllib\request.py", line 138, in urlopen
return opener.open(url, data, timeout)
 File "C:\Python32\lib\urllib\request.py", line 367, in open
req = meth(req)
 File "C:\Python32\lib\urllib\request.py", line 1066, in do_request_
raise TypeError("POST data should be bytes"
TypeError: POST data should be bytes or an iterable of bytes. It cannot be str.

我尝试过编码，但没有帮助。

原文

My code:

import urllib.request, urllib.parse, urllib.error

def login():
     url = 'http://rsbot.lt/news.php'
     values = {'user_name' : 'Name',
          'user_pass' : 'Password' }

     data = urllib.parse.urlencode(values)
     req = urllib.request.Request(url, data)
     response = urllib.request.urlopen(req)
     return response.read()

login()

My error:

 Traceback (most recent call last):
  File "C:\Users\Myrez\Desktop\test.py", line 13, in <module>
login()
 File "C:\Users\Myrez\Desktop\test.py", line 10, in login
response = urllib.request.urlopen(req)
 File "C:\Python32\lib\urllib\request.py", line 138, in urlopen
return opener.open(url, data, timeout)
 File "C:\Python32\lib\urllib\request.py", line 367, in open
req = meth(req)
 File "C:\Python32\lib\urllib\request.py", line 1066, in do_request_
raise TypeError("POST data should be bytes"
TypeError: POST data should be bytes or an iterable of bytes. It cannot be str.

I've tried encode but it did not help.

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想念有你 2024-12-07 09:15:39

该错误告诉您做错了什么：

“TypeError：POST 数据应该是字节或可迭代的字节。它不能是 str。”

对于 POST 数据，您应该使用 bytes 类型，而不是 str 类型。
如果您通过执行 type(data) 查看数据类型，您会发现它是一个 str，但它应该是一个字节。

如果您随后查看有关如何使用 urllib 的 Python 文档，您将看到如何发布表单的示例：

>>> import urllib.request
>>> import urllib.parse
>>> params = urllib.parse.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})
>>> params = params.encode('utf-8')
>>> f = urllib.request.urlopen("http://www.musi-cal.com/cgi-bin/query", params)

它告诉您如何将数据（此处称为 params）转换为字节而不是 str。

The error tells you what you are doing wrong:

"TypeError: POST data should be bytes or an iterable of bytes. It cannot be str."

You should use a bytes type, not a str type for the POST data.
If you look at your data type, by doing type(data), you'll see that it is a str, but it should be a bytes.

If you then look at the Python documentation on how to use urllib, you will see there the example of how to post a form:

>>> import urllib.request
>>> import urllib.parse
>>> params = urllib.parse.urlencode({'spam': 1, 'eggs': 2, 'bacon': 0})
>>> params = params.encode('utf-8')
>>> f = urllib.request.urlopen("http://www.musi-cal.com/cgi-bin/query", params)

Which tells you how to make the data (here called params) into bytes instead of str.

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