我有这样的hbase表：

total date1:tCount1 date2:tCount2 ...
url1 date1:clickCount1 date2:clickCount2 ...
url2 date1:clickCount1 date2:clickCount2 ...
...
``` `url1, url2, ...` 是行键。表只有一个列族。
我有一个日期范围（从 `datei` 至 `datej` )作为输入。我需要输出在一天内为每个网址点击份额。
输出必须具有以下格式：

datei url1:share1 url2:share1...
...
datej url1:share1 url2:share1...

哪里

datei.url1:share1 = url1.datei:clickCount1 / total datei:tCount1

我开始编写happybase脚本，但我不知道如何使用happybase从行中选择单独的列。我的happybase脚本如下：

import argparse
import calendar
import getpass
import happybase
import logging
import random
import sys

USAGE = """

To query daily data for a year, run:
$ {0} --action query --year 2014

To query daily data for a particular month, run:
$ {0} --action query --year 2014 --month 10

To query daily data for a particular day, run:
$ {0} --action query --year 2014 --month 10 --day 27

To compute totals add --total argument.

""".format(sys.argv[0])

logging.basicConfig(level="DEBUG")

HOSTS = ["bds%02d.vdi.mipt.ru" % i for i in xrange(7, 10)]
TABLE = "VisitCountPy-" + getpass.getuser()

def connect():
host = random.choice(HOSTS)
conn = happybase.Connection(host)

logging.debug("Connecting to HBase Thrift Server on %s", host)
conn.open()
if TABLE not in conn.tables():
    # Create a table with column family `cf` with default settings.
    conn.create_table(TABLE, {"cf": dict()})
    logging.debug("Created table %s", TABLE)
else:
    logging.debug("Using table %s", TABLE)
return happybase.Table(TABLE, conn)

def query(args, table):
r = list(get_time_range(args))
t = 0L
for key, data in table.scan(row_start=min(r), row_stop=max(r)):
if args.total:
t += long(data["cf:value"])
else:
print "%s\t%s" % (key, data["cf:value"])
if args.total:
print "total\t%s" % t

def get_time_range(args):
cal = calendar.Calendar()
years = [args.year]
months = [args.month] if args.month is not None else range(1, 1+12)

for year in years:
    for month in months:
        if args.day is not None:
            days = [args.day]
        else:
            days = cal.itermonthdays(year, month)
        for day in days:
            if day > 0:
                yield "%04d%02d%02d" % (year, month, day)

def main():
parser = argparse.ArgumentParser(description="An HBase example", usage=USAGE)
parser.add_argument("--action", metavar="ACTION", choices=("generate", "query"), required=True)
parser.add_argument("--year", type=int, required=True)
parser.add_argument("--month", type=int, default=None)
parser.add_argument("--day", type=int, default=None)
parser.add_argument("--total", action="store_true", default=False)

args = parser.parse_args()
table = connect()
if args.day is not None and args.month is None:
    raise RuntimeError("Please, specify a month when specifying a day.")
if args.day is not None and (args.day < 0 or args.day > 31):
    raise RuntimeError("Please, specify a valid day.")
query(args, table)

if name == "main":
main()

那么，我应该如何更改我的脚本（实际上，是 `query()` 函数）以获取定义日期范围中的分隔列？