title: str object has no attribute '*'
body: <p>I wanna update the password of my user but i have the error</p>
  
  <blockquote>
    <p>str object has no attribute '*'</p>
  </blockquote>
  
  <pre><code>if request.method == 'POST':
      form = resetPwdForm(request.POST)
      if form.is_valid():
          email = form.cleaned_data['email']
          passwordNew = form.cleaned_data['passwordNew']
          passwordConfirm = form.cleaned_data['passwordConfirm']
              #actual password is ok
          if passwordConfirm == passwordNew:
              #new password match confirm
              u = request.POST.get('username', '')
              u.set_password(passwordNew)
              u.save()
  </code></pre>
  
  <p>The problem is on the line <code>u.set_password(passwordNew)</code>.</p>