@Utami1151 take notice that after you change the SSID to contain the date, none of the previously connected clients would be able to autoconnect to it, so a manual intervention would be required by the end-user.
If this is what you are trying to get, somekind of security for a hotel-like deployment, to avoid previous guests to use the "free Wi-Fi" service, that would be a tricky way to accomplish that, and maybe there would be another way to address that in your deployment.
With that been said, I think this piece of script would work for you if using a Catalyst 9800 (maybe missing other libraries that are need):
# // Netmiko module for remote connectivity
from netmiko import ConnectHandler, NetmikoTimeoutException, NetmikoAuthenticationException
# // Get date into the script
import datetime, timedelta
today = datetime.date.today()
ssidDate = str(today.strftime("%d%m%Y"))
# // Replace "Guest" with your own SSID substring that you want to keep
ssidString = Guest + ssidDate
# // Define Configuration to be entered on c9800
template="""wlan Guest 99 {ssidString}
shutdown
# // As you are only modifying thge broadcasted SSID and not the WLAN profile, there is no need to change anything unless you want to also change the PSK
no shutdown
end
write""".format(ssidString=ssidString)
#// Create c9800 template and replace credentials and IP address
yourIosWlc = ConnectHandler(
device_type="cisco_ios",
ip="10.11.12.13",
username="admin",
password="12345678"
)
#// Push the generated config on WLC
generatedconfig=template.split("\n")
yourIosWlc.send_config_set(generatedconfig)
yourIosWlc.disconnect()
HTH
-Jesus
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