Jira SOAP API get all users with Python

I am trying to get all users in relation to the existing groups in JIRA without getting the group names directly out of the DB. Since there is no "ge开发者_开发问答tAllUsers" I don't know if it is possible. I was thinking of "getProjectWithSchemesById" and filter the returned Groups (if this is a way to get ALL groups). Hope you have some ideas

...using Jira 4.3.4 and Python 2.7.1+