from pandas import date_range, Series from plotly.basedatatypes import BaseTraceType from typing import List class Chart: x: Series = None def traces(self) -> List[BaseTraceType]: pass def range_breaks(self) -> List[dict]: # Assuming x is either a date or timestamp. start_date = self.x.min() end_date = self.x.max() all_dates = date_range(start = start_date, end = end_date) missing_dates = all_dates.difference(self.x) return [dict(values = missing_dates)]