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.myob as mod
conn = mod.connect(" If using an online instance: InitiateOAuth=GETANDREFRESH;OAuthClientId=YourClientId;OAuthClientSecret=YourClientSecret;CompanyFileId=yourCompanyFileId;CallbackURL=http://localhost:33333;User=companyFileUser;Password=companyFilePassword; If using an on premise instance: InitiateOAuth=OFF;URL=http://localhost:8080/accountright;CompanyFileId=327eed10-9615-4e5e-bd9e-ae2cc00e2c70;User=companyFileUser;Password=companyFilePassword;")
cur = conn.cursor()
cmd = "SELECT * FROM sys_tablecolumns WHERE TableName = 'Accounts'"
cur.execute(cmd)
rs = cur.fetchall()
for row in rs:
	print(row)