Optimal way to check if client is connected before emitting, due to bad namespace error?

[Mathiaszero]

What's the best way to check that the client is connected for the following situation? I get socketio.exceptions.BadNamespaceError: / is not a connected namespace. which is probably due to emitting when the client is not connected to the server.

[miguelgrinberg]

If a namespace is connected then client.get_sid(namespace) will return a value of type string. If the namespace is not connected, the return will be None. You can also catch the BadNamespaceError. Which way is best really depends on each particular situation and your personal preferences.