The available columns for any given table are fetched from a system table called "sys_tablecolumns". A specific table name is provided in the WHERE criteria to restrict the table from which the column information is fetched:

import cdata.pingone as mod
conn = mod.connect("AuthScheme=OAuth;InitiateOAuth=GETANDREFRESH;WorkerAppEnvironmentId=eebc33a8-xxxx-4f3a-yyyy-d3e5262fd49e;Region=US;OAuthClientId=client_id;OAuthClientSecret=client_secret;")
cur = conn.cursor()
cmd = "SELECT * FROM sys_tablecolumns WHERE TableName = '[CData].[Administrators].Users'"
cur.execute(cmd)
rs = cur.fetchall()
for row in rs:
	print(row)