title: form.is_valid() returns false (django)
body: <p>I am a bit new to django. Im trying to send a file over to another server once it is chosen in upload, but is <code>form.is_valid()</code> always return false would not let me enter <code>if</code></p>
  
  <p><code>views.py</code>-</p>
  
  <pre><code>def sent(request):
      if request.method == 'POST':
          form = SendFileForm(request.POST, request.FILES)
          print "form is made"
          print form.errors
          if form.is_valid():
              print "form is valid"
              new_song = Song(songfile= request.FILES['songfile'])
              new_song.save()
              print "new song is made and saved"
              l = List()
              #cd = form.cleaned_data                                                                                                                   
              #SENDS THE FILE TO SERVER GIVEN PATH
              l.all_files(new_song.songfile.path)
              return HttpResponseRedirect(reverse('get_files.views.sent'))
          else:
              print "form is not valid"
      else:
          form = SendFileForm()
  
      songs = Song.objects.all()
      return render_to_response('sent.html', {'songs': songs,'form': form}, context_instance=RequestContext(request))
  </code></pre>
  
  <p><code>sent.html</code> template-</p>
  
  <pre><code>{% if form.errors %}
      &lt;p style="color: red;"&gt;
          Please correct the error{{ form.errors|pluralize }} below.
      &lt;/p&gt;
  {% endif %}
  
  &lt;form action={% url "sent" %} method="post" enctype="multipart/form-data"&gt;
    {% csrf_token %}
      &lt;p&gt;{{ form.non_field_errors }}&lt;/p&gt;
          &lt;p&gt;{{ form.songfile.label_tag }} {{ form.songfile.help_text }}&lt;/p&gt;
          &lt;p&gt;
              &lt;!--{{ form.songfile.errors }}--&gt;
              {{ form.songfile }}
          &lt;/p&gt;
          &lt;p&gt;&lt;input type="submit" value="Upload" /&gt;&lt;/p&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p><code>forms.py</code>-</p>
  
  <pre><code>class SendFileForm(forms.Form):
      path = forms.CharField()
      songfile = forms.FileField(label='Select a music file',help_text='max. 4 megabytes')
  </code></pre>
  
  <p>I have searched up many forums and not able to solve the problem. 
  Thank you in advance!</p>