def add_fields(self, form, index):
        super(ColumnFormSet, self).add_fields(form, index)
        form.fields['column'].choices = self.get_choices()
Insert a wxPage instance into the notebook.
dataset/ETHPy150Open magopian/django-data-exports/data_exports/forms.py/ColumnFormSet.add_fields--crossover with--dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/wx/wx_notebook.py/wxDocumentNotebook.InsertWxPage