我尝试使用简单的命令通过python中的子进程访问hbase。以下代码提供了错误的输出：

import subprocess
cmd=['hbase','shell','list']
subprocess.call(cmd)

我没有给出hbase中的表列表，而是得到以下输出：

Usage: hbase [<options>] <command> [<args>]
 Options:
  --config DIR    Configuration direction to use. Default: ./conf
  --hosts HOSTS   Override the list in 'regionservers' file

Commands:
Some commands take arguments. Pass no args or -h for usage.
shell           Run the HBase shell
hbck            Run the hbase 'fsck' tool
snapshot        Create a new snapshot of a table
snapshotinfo    Tool for dumping snapshot information
wal             Write-ahead-log analyzer
hfile           Store file analyzer
zkcli           Run the ZooKeeper shell
upgrade         Upgrade hbase
master          Run an HBase HMaster node
regionserver    Run an HBase HRegionServer node
zookeeper       Run a Zookeeper server
rest            Run an HBase REST server
thrift          Run the HBase Thrift server
thrift2         Run the HBase Thrift2 server
clean           Run the HBase clean up script
classpath       Dump hbase CLASSPATH
mapredcp        Dump CLASSPATH entries required by mapreduce
pe              Run PerformanceEvaluation
ltt             Run LoadTestTool
version         Print the version
CLASSNAME       Run the class named CLASSNAME

如何发出subprocess命令？