code: def QA_util_getBetweenQuarter(begin_date, end_date):
      
      quarter_list = {}
      month_list = QA_util_getBetweenMonth(begin_date, end_date)
      for value in month_list:
          tempvalue = value.split("-")
          year = tempvalue[0]
          if tempvalue[1] in ['01', '02', '03']:
              quarter_list[year + "Q1"] = ['%s-01-01' % year, '%s-03-31' % year]
          elif tempvalue[1] in ['04', '05', '06']:
              quarter_list[year + "Q2"] = ['%s-04-01' % year, '%s-06-30' % year]
          elif tempvalue[1] in ['07', '08', '09']:
              quarter_list[year + "Q3"] = ['%s-07-31' % year, '%s-09-30' % year]
          elif tempvalue[1] in ['10', '11', '12']:
              quarter_list[year + "Q4"] = ['%s-10-01' % year, '%s-12-31' % year]
      return(quarter_list)
docs: #加上每季度的起始日期、结束日期