我在hbase中有一个表，其中汉字存储在某一列中，比如'flt:crew_dept'. 现在我需要过滤掉所有flt:crew_dept'等于某个值。在hbase shell中执行此操作时，工作正常，如下所示

scan 'PAX_EXP_FACT', {COLUMNS => ['FLT:CREW_DEPT'], FILTER => "SingleColumnValueFilter ('FLT', 'CREW_DEPT', =, 'binary:\xe4\xb8\x80\xe9\x83\xa8', true, true)", LIMIT => 5}
ROW                                                  COLUMN+CELL
 CA101-20160808-PEK-001192753702                     column=FLT:CREW_DEPT, timestamp=1500346136328, value=\xE4\xB8\x80\xE9\x83\xA8
 CA101-20161103-PEK-001181988752                     column=FLT:CREW_DEPT, timestamp=1500346230204, value=\xE4\xB8\x80\xE9\x83\xA8
 CA101-20161105-PEK-000728690130                     column=FLT:CREW_DEPT, timestamp=1500346244963, value=\xE4\xB8\x80\xE9\x83\xA8
 CA101-20161201-PEK-006731936575                     column=FLT:CREW_DEPT, timestamp=1500346233640, value=\xE4\xB8\x80\xE9\x83\xA8
 CA101-20161212-PEK-001512808262                     column=FLT:CREW_DEPT, timestamp=1500346223572, value=\xE4\xB8\x80\xE9\x83\xA8
5 row(s) in 0.0060 seconds

但是，在python中使用happybase执行类似操作时，不会返回任何结果：

import happybase
import datetime
import pytz
connection = happybase.Connection('192.168.199.200', port=9090)
table = connection.table('PAX_EXP_FACT')
filter_str = ""
filter_str += "SingleColumnValueFilter('FLT', 'CREW_DEPT', =, 'binary:\xe4\xba\x8c\xe9\x83\xa8')"
results = table.scan(
    filter=filter_str
    #     ,limit=100
)
count = 0
for key, data in results:
    count += 1
    print(data[b'FLT:CREW_DEPT'].decode('utf-8'))
print('No. of flight matches:', count)
connection.close()

返回0行。。。
有人能帮忙吗？非常感谢！！！