CommandLineParser parser = new BasicParser(); Options options = new Options(); options.addOption("h", "host", true, "mysql host"); options.addOption("p", "port", true, "mysql port"); options.addOption("user", "username", true, "mysql username"); options.addOption("pass", "password", true, "mysql password"); options.addOption("help", "help", false, "Help Info"); CommandLine commandLine = parser.parse(options, args); String helpinfo = String.format("[?]CommandLine:\n" + "\t-h\t--host\t\tmysql host\n" + "\t-p\t--port\t\tmysql port\n" + "\t-user\t--username\tmysql username\n" + "\t-pass\t--password\tmysql password\n" + "\t-help\t--help\t\thelp info\n\n" + "eg:java -jar MySQLMonitor.jar -h 127.0.0.1 -user CoolCat -pass mysqlmonitor"); if (commandLine.hasOption("help")) { System.out.println(helpinfo); System.exit(0); } if (args.length < 3){ System.out.println(helpinfo); System.exit(0); } String dbhost = "127.0.0.1"; String dbport = "3306"; String dbuser = "root"; String dbpass = "root"; if (commandLine.hasOption("h")) { dbhost = commandLine.getOptionValue("h"); } if (commandLine.hasOption("p")) { dbport = commandLine.getOptionValue("p"); } if (commandLine.hasOption("user")) { dbuser = commandLine.getOptionValue("user"); } if (commandLine.hasOption("pass")) { dbpass = commandLine.getOptionValue("pass"); }将这串代码修改成python

你可以使用 argparse 模块来处理命令行参数，以下是一个 Python 版本的示例代码：

import argparse

parser = argparse.ArgumentParser(description='Process MySQLMonitor command line arguments')
parser.add_argument('-h', '--host', type=str, help='mysql host')
parser.add_argument('-p', '--port', type=str, help='mysql port')
parser.add_argument('--username', type=str, help='mysql username')
parser.add_argument('--password', type=str, help='mysql password')
parser.add_argument('--help', action='store_true', help='Help Info')

args = parser.parse_args()

helpinfo = '''[?]CommandLine:
    -h --host       mysql host
    -p --port       mysql port
    --username      mysql username
    --password      mysql password
    --help          help info

eg: python MySQLMonitor.py -h 127.0.0.1 --username CoolCat --password mysqlmonitor
'''

if args.help:
    print(helpinfo)
    exit()

if not (args.host and args.username and args.password):
    print(helpinfo)
    exit()

dbhost = args.host
dbport = args.port or '3306'
dbuser = args.username
dbpass = args.password

这个代码与你提供的 Java 代码实现的功能相同：解析命令行参数，并将它们存储在 `args` 对象中。如果用户提供了 `-help` 参数，就会输出帮助信息并退出；如果缺少必要的参数，也会输出帮助信息并退出。如果所有必要参数都存在，就会将它们存储在 `dbhost`、`dbport`、`dbuser` 和 `dbpass` 变量中。