如何使用 Python 构建 CLI 客户端模型

Question

我需要提供一个 Python 客户端来表示 Cisco 路由器的 CLI。这种客户端的要求是它允许自动完成 PyCharm 内的命令。

例如，如果开发人员想要调用 CLI 命令：

commit confirm <commit_confirm_time> log <log>

开发人员可以键入

commit.confirm.

并获取自动完成值的列表：

.log(log='log.txt')
commit_confirm_time('aaaa')

因为

cli.commit.confirm.log(log='log.txt')
cli.commit.confirm.commit_confirm_time('aaaa').log('file1.log')

代表

commit confirm log <log>
commit confirm <commit_confirm_time> log <log>

---

我编写了这段简短的代码来对特定命令系列进行建模，但完整集为 5000 +命令的独特排列，因此我正在寻找一种更好的方法来对命令进行建模，同时保持允许自动完成命令的要求

from typing import List

    commands: List[str] = ['commit log <log>',
                           'commit no-warning',
                           'commit and-exit log <log>',
                           'commit check log <log>',
                           'commit check no-warning',
                           'commit confirm log <log>',
                           'commit confirm <commit_confirm_time> log <log>',
                           ]
    
    
    class CliLog:
        def __init__(self):
            pass
    
        def log(self, log=''):
            pass
    
    
    class CliAndExit:
        def __init__(self):
            pass
    
        def log(self, log=''):
            pass
    
    
    class CliCheck(object):
        def __init__(self):
            pass
    
        def log(self, log=''):
            pass
    
        def no_warning(self):
            pass
    
    
    class CliConfirm(object):
        def __init__(self):
            self.log: CliLog = CliLog()
    
        def log(self, log=''):
            pass
    
        def commit_confirm_time(self, commit_confirm_time='') -> CliLog:
            return self.log()
    
    
    class CliCommit:
        def __init__(self):
            self.and_exit: CliAndExit = CliAndExit()
            self.check: CliCheck = CliCheck()
            self.confirm: CliConfirm = CliConfirm()
    
        def log(self, log=''):
            pass
    
        def no_warning(self):
            pass
    
    
    class Cli:
        def __init__(self):
            self.commit: CliCommit = CliCommit
    
    
    cli: Cli = Cli()
    
    cli.commit.log('file1.log')
    cli.commit.no_warning()
    cli.commit.and_exit.log('file1.log')
    cli.commit.check.log('file1.log')
    cli.commit.check.no_warning()
    cli.commit.confirm.log(log='log.txt')
    cli.commit.confirm.commit_confirm_time('aaaa').log('file1.log')