1 from <...> import get_user
   2 from <...> import header, footer
   3 from quixote import htmltext
   4 from quixote.form2 import Form, StringWidget, PasswordWidget
   5 
   6 def login_form(request):
   7     form = Form(use_tokens=False)
   8     form.add(StringWidget, 'user_id', title='User ID')
   9     form.add(PasswordWidget, 'password', title='Password')
  10     form.add_submit('login', 'Login')
  11 
  12     def render [html] ():
  13         header()
  14         form.render()
  15         footer()
  16 
  17     if not form.is_submitted():
  18         return render()
  19 
  20     user_id = form['user_id']
  21     password = form['password']
  22     if not user_id:
  23         form.set_error('user_id', "You must supply a user ID")
  24     user = get_user(user_id)
  25     if user_id and not user:
  26         form.set_error('user_id', "Invalid user ID")
  27     if user and not password:
  28         send_new_password(user)
  29         form.set_error('password',
  30                        "A new password has been generated and "
  31                        "e-mailed to your address.")
  32     if user and password and not user.valid_password(password):
  33         form.set_error('password', "Incorrect password")
  34 
  35     if form.has_errors():
  36         return render()
  37 
  38     request.session.set_user(user)
  39     return htmltext(request.redirect("/"))
  40 
  41 def send_new_password(user):
  42     ...
  43