$ pip install tw_stocks

from tw_stocks import TWStocks
twstocks = TWStocks('API secret key')
twstocks.get_cash_flow_statement('1101', '2021-01-01')

[{'CMKey': '1101',
  'CashAndCashEquivalents': '62025098',
  'CashFlowFromFinancingActivities': '-1790927',
  'CashFlowFromInvestingActivities': '5292661',
  'CashFlowFromOperatingActivities': '7124458',
  'DateRange': '202101',
  'EarningsBeforeTaxes': '4846931',
  'FreeCashFlow': '2232457',
  'NetCashFlow': '10591576'}]