使用Mechanize提交表单（Python） [英] Submitting Forms with Mechanize (Python)

问题描述

我打开了网站：

  site = br.open（http://example.com/login.php）
  

我有一个表格列表（带有br.forms）。

 < GET http://example.com/search.php application / x-www-form-urlencoded 
< HiddenControl（search = 1）（readonly）> 
 ... 
< POST http://example.com/login.php application / x-www-form-urlencoded 
< TextControl（username =）> 
< PasswordControl（password =）> 
< CheckboxControl（stay = [1]）> 
< SubmitControl（< None> =登入）（只读）>> 
  

我一直在尝试提交用户名和密码字段。

我试过这样做：

  br.select_form（nr = 0）
 br.form [username] ='usernamehere'
 br.form [password] ='passwordhere'
 br.submit（）
  pre> 
 
 
然后我意识到，我试图填写的表单不是页面中的第一个，但更改0对任何内容都没有帮助。我应该怎么做才能在这样的页面上选择表单？
然而，
 
 
这不是唯一的问题。
 
 
 
当我运行它时，我得到这个错误： 
 
 
  Traceback（最近一次调用的最后一个）：
在< module>文件的第34行中输入C：\Python26\login.py 
 br.form [username] ='usernamehere'
 ... 
 ControlNotFoundError：无控件匹配名称'username'
  
我该如何解决这个问题？ D：还是我做错了？如果是后者，我该怎么做呢？
      解决方案

使用名称选择表单/ p>

  br.select_form（name =order）
  

你在这里做什么：

  br.form [username] ='usernamehere'
  

正试图在选定的表单中为控件设置一个值，所以当他找不到它，它会抛出你看到的异常。

Well, I am trying to login to a site using Python and mechanize.

I've got the site opened:

site = br.open("http://example.com/login.php")

And I've got a list of the forms (with br.forms).

<GET http://example.com/search.php application/x-www-form-urlencoded
<HiddenControl(search=1) (readonly)>
...
<POST http://example.com/login.php application/x-www-form-urlencoded
<TextControl(username=)>
<PasswordControl(password=)>
<CheckboxControl(stay=[1])>
<SubmitControl(<None>=Log in) (readonly)>>

I've been trying to submit the username and password fields.

I tried doing it like this:

br.select_form(nr=0)
br.form["username"] = 'usernamehere'
br.form["password"] = 'passwordhere'
br.submit()

Then I realised that the forms I were trying to fill in weren't the first on the page, but changing the 0 didn't help with anything. What should I do for selecting the form on a page like this?

However! That is not the only problem.

When I run it, I get this error:

Traceback (most recent call last):
File "C:\Python26\login.py", line 34, in <module>
br.form["username"] = 'usernamehere'
...
ControlNotFoundError: no control matching name 'username'

How can I fix this? D: Or am I doing it totally wrong? If it's the latter, how would I go about doing it?

解决方案

to select a form using its name you should use:

br.select_form(name="order")

what you are doing here:

br.form["username"] = 'usernamehere'

is trying to set a value to a control under the selected form, so when he can't find it, it throws the exception you are seeing.

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