python argparse例子
#!/usr/bin/python# coding=utf-8
import argparse
from argparse import ArgumentParser, RawTextHelpFormatter
def get_args():
"""实例化类，formatter_class参数允许help信息以自定义的格式显示"""
parser = ArgumentParser(description="This is a tool for execute command(s) on remote server(s) or get/put file(s) from/to the remote server(s)\nNotice: please always use '/' as path separater!!!",formatter_class=RawTextHelpFormatter,epilog="Notice:\nIf any options use more than once,the last one will overwrite the previous")
remote_command = parser.add_argument_group('remote command', 'options for running remote command')
remote_command.add_argument('--cmd', metavar='“COMMAND”', dest='cmd',help="command run on remote server,multiple commands sperate by ';'")
sftp = parser.add_argument_group('sftp', 'options for running sftp')
sftp.add_argument('--put', metavar='', help="transfer from local to remote", nargs=2)
sftp.add_argument('--get', metavar='', help="transfer from remote to local", nargs=2)
global args
args = vars(parser.parse_args())
print args
n = 0
for i in ('cmd', 'put', 'get'):
if i in args:
if args is None:
del args
else:
n += 1
if n > 1:
print('\nOnly one of the "--cmd --put --get" can be used!')
exit(10)
if __name__ == '__main__':
get_args()
if 'cmd' in args:
echo_cmd = args['cmd']
print echo_cmd
# --cmd uptime --get /home/nginx /home/nginx
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