pandas date_range

def get_date_range():

    from_date_str, to_date_str = '2019-08-01', '2019-09-09'

    df_date_range = pd.date_range(from_date_str, to_date_str)

    df = pd.DataFrame(df_date_range, columns=['Date'])

    df['Date'] = df.apply(lambda x: x['Date'].strftime("%Y-%m-%d"), axis=1)

    from_date_str, to_date_str = '2019-08-01', '2019-09-09'

    df_date_range = pd.date_range(from_date_str, to_date_str, freq='MS')

    df = pd.DataFrame(df_date_range, columns=['Date'])

    df['Date'] = df.apply(lambda x: x['Date'].strftime("%Y-%m"), axis=1)

    from_date_str, to_date_str = '2019-08-01', '2019-09-09'

    df = pd.DataFrame()

    df['monday'] = pd.date_range(from_date_str, to_date_str, freq='W-MON')

    df['sunday'] = pd.date_range(from_date_str, to_date_str, freq='W-SUN')

    df['monday'] = df.apply(lambda x: x['monday'].strftime("%Y-%m-%d"), axis=1)

    df['sunday'] = df.apply(lambda x: x['sunday'].strftime("%Y-%m-%d"), axis=1)

if __name__ == '__main__':

    get_date_range()