我正在尝试找到一个现有的解析器（最好在 Python 中）来编写和读取 SysML v2。
SysML v2 提交团队 (SST) 的官方 Github 存储库已经在网上放置了一些示例（例如https://github.com/Systems-Modeling/SysML-v2-Release/blob/master/sysml/src/examples/Vehicle %20Example/VehicleUsages.sysml），但我无法让 Eclipse 插件正常运行。（预览窗口中没有显示任何内容，也没有错误消息）。
我安装并执行了给定的示例代码（ https://github.com/Systems-Modeling/SysML-v2-API-Python-Client ）有一个 SysML-v2-API-Python-Client 的存储库，但所有我我得到的是这条消息：
$ python3.8 Test1.py
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 159, in _new_conn
conn = connection.create_connection(
File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 84, in create_connection
raise err
File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 74, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 665, in urlopen
httplib_response = self._make_request(
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 387, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib/python3.8/http/client.py", line 1256, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib/python3.8/http/client.py", line 1302, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib/python3.8/http/client.py", line 1251, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib/python3.8/http/client.py", line 1011, in _send_output
self.send(msg)
File "/usr/lib/python3.8/http/client.py", line 951, in send
self.connect()
File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 187, in connect
conn = self._new_conn()
File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 171, in _new_conn
raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f9492d1b9a0>: Failed to establish a new connection: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "Test1.py", line 38, in <module>
api_response = api_instance.delete_branch_by_project_and_id(
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/api/branch_api.py", line 62, in delete_branch_by_project_and_id
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/api/branch_api.py", line 144, in delete_branch_by_project_and_id_with_http_info
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/api_client.py", line 364, in call_api
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/api_client.py", line 181, in __call_api
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/api_client.py", line 431, in request
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/rest.py", line 256, in DELETE
File "/home/qohelet/.local/lib/python3.8/site-packages/sysml_v2_api_client-2021.post9-py3.8.egg/sysml_v2_api_client/rest.py", line 163, in request
File "/usr/lib/python3/dist-packages/urllib3/request.py", line 75, in request
return self.request_encode_url(
File "/usr/lib/python3/dist-packages/urllib3/request.py", line 97, in request_encode_url
return self.urlopen(method, url, **extra_kw)
File "/usr/lib/python3/dist-packages/urllib3/poolmanager.py", line 330, in urlopen
response = conn.urlopen(method, u.request_uri, **kw)
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 747, in urlopen
return self.urlopen(
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 747, in urlopen
return self.urlopen(
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 747, in urlopen
return self.urlopen(
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 719, in urlopen
retries = retries.increment(
File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 436, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=80): Max retries exceeded with url: /projects/project_id_example/branches/branch_id_example (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f9492d1b9a0>: Failed to establish a new connection: [Errno 111] Connection refused'))
我应该有什么运行吗？有没有关于如何使用它的教程或手册？
或者还有其他解析器吗？