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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def generate_form(model, form=None, fields=False, exclude=False):
 """ Generate a form from a model. :param model: A Django model. :param form: A Django form. :param fields: A list of fields to include in this form. :param exclude: A list of fields to exclude in this form. """

    _model, _fields, _exclude = model, fields, exclude

    class Form(form or forms.ModelForm):
        class Meta:
            model = _model

            if _fields is not False:
                fields = _fields

            if _exclude is not False:
                exclude = _exclude

    return Form