import re with open('kifi-app/lib/core/widgets/premium_text_field.dart', 'r') as f: content = f.read() content = content.replace(" final TextEditingController? controller;", " final TextEditingController? controller;\n final FocusNode? focusNode;") content = content.replace(" this.controller,", " this.controller,\n this.focusNode,") content = content.replace(" controller: controller,", " controller: controller,\n focusNode: focusNode,") with open('kifi-app/lib/core/widgets/premium_text_field.dart', 'w') as f: f.write(content)