eAPI_PortChannel_VLAN_Add

#!/usr/bin/python
from jsonrpclib import Server
import json
import ssl

#CREDS
user = "admin"
passwd = 'Arista123'
ssl._create_default_https_context = ssl._create_unverified_context

intf_description = '-uplink'
# need all uplink port-channels to end in `-uplink` for the description (or any arbitrary end, as long as its consistent)
switches = ['192.168.255.201', '192.168.255.202', '192.168.255.203', '192.168.255.204']
vlan_to_add = '199'

def main():
    for switch in switches:
          #SESSION SETUP FOR eAPI TO DEVICE
          url = "https://%s:%s@%s/command-api" % (user, passwd, switch)
          ss = Server(url)
          #CONNECT TO DEVICE
          hostname = ss.runCmds( 1, ['enable', 'show hostname' ])[1]['hostname']
          running_config = ss.runCmds( 1, ['enable', 'show running-config' ])[1]['cmds']
          interfaceList = []
          for line in running_config:
              if line.startswith('interface Port-Channel'):
                  for conf in running_config[line]['cmds']:
                      if conf.endswith(intf_description):
                          interfaceList.append(line)
          for interface in interfaceList:
              print 'Adding VLAN '+vlan_to_add+' to '+interface+' on '+hostname
              update_config = ss.runCmds( 1, ['enable', 'configure', interface, 'switchport trunk allowed vlan add '+vlan_to_add])

if __name__ == "__main__":
  main()