Python 3.6 pyodbc to SQL How to execute SP

I've created a Python script to execute an SP using my cursor with connection odbc. I've tried everything I found but I can not execute the desired procedure. My code below:

import pyodbc
conn = pyodbc.connect( 'DRIVER={SQL Server};'
                           'SERVER=XXXXXX;'
                           'DATABASE=XXX;UID=XXXX;'
                           'PWD=XXX')
cursor = conn.cursor()
cmd_prod_executesp = 'EXECUTE DC_SAS_EvaluationUpdate'
cursor.execute(cmd_prod_executesp)
conn.close()

I have tried:

cmd_prod_executesp = '{call DC_SAS_EvaluationUpdate}'
cmd_prod_executesp = 'exec DC_SAS_EvaluationUpdate'
cmd_prod_executesp = '{CALL DC_SAS_EvaluationUpdate}'

I appreciate your help

thanks so much