Python SDK: PUT/GET API for vineyard csi driver

[dashanji]

Describe your problem

The issue is part of #1528, and also as a follow-up of #1533.

During integration with kubeflow, we need to provide a simple PUT/GET API to replace the original IO API(such as read_csv/to_csv/read_parquet/to_parquet and so on). The design is as follows:

vineyard.read('path')

client = vineyard.connect('path/vineyard.sock')
objid = client.get_name(path)
value = client.get(path)
client.close()
return value

vineyard.write(value, 'path')

client = vineyard.connect('path/vineyard.sock')
client.put(value, persist=True, name=path)
client.close()

[dashanji]

Hi @sighingnow, could you please review this?

[sighingnow]

Don't close the client. Just leave it as it and there's a connection manager that will manage its lifetime.

[sighingnow]

objid = client.get_name(path)
value = client.get(path)

client.get(name=...)

[dashanji]

Don't close the client. Just leave it as it and there's a connection manager that will manage its lifetime.

Copy.