python机械化表单提交错误答案

【问题标题】：python mechanize form submitting errorpython机械化表单提交错误
【发布时间】：2013-10-14 17:07:42
【问题描述】：

import mechanize

br=mechanize.Browser()
br.set_handle_robots(False)
formno=-1

br.open(raw_input("enter the url"))
allforms=br.forms()

for form in allforms:
    print "form name:",form.name

    print "lets get to work"

for form in br.forms():
    formno=formno+1
    print "*"*20
    print "working on form ",form.name
    #form.set_all_readonly(False)
    print formno
    br.select_form(nr=formno)
    print "boss"
    for control in br.form.controls:
        if control.readonly is True:
            pass
        else:
            print control.name
            form[control.name]='sparsh'

    resp=br.submit()
    resp=resp.get_data()
    print resp

输出：

enter the url http://www.howtogeek.com/
form name: None
form name: None
form name: None
lets get to work
********************
working on form None
0
boss
emailaddress
emailaddress False
email
email False

One more step!
Make sure to check your email for a confirmation message.

Note: If you do not get it soon, check your Spam or Junk folders.

hello
********************
working on form None
1

**Traceback (most recent call last):
File "D:\thesis\data\form_mechanize_try.py", line 21, in
br.select_form(nr=formno)
File "build\bdist.win32\egg\mechanize\_mechanize.py", line 524, in select_form
raise FormNotFoundError("no form matching "+description)
FormNotFoundError: no form matching nr 1**

为什么会出现这个错误？

我想要实现的是填写特定网站中可用的所有表单并查看响应.. 但上面的代码只能选择第一个表单，然后给出错误

【问题讨论】：

标签： python mechanize

【解决方案1】：

您想使用未命名的表单。这是正确的语法：

# List the forms that are in the page

for form in br.forms():
    print "Form name:", form.name
    print form

# To go on the mechanize browser object must have a form selected
br.select_form(nd = "form1")         # works when form has a name
br.form = list(br.forms())[0]  # use when form is unnamed

Python 初学者有一个很棒的关于机械化的备忘单：http://www.pythonforbeginners.com/cheatsheet/python-mechanize-cheat-sheet/

【讨论】：