from collections import defaultdict 


def def_value(): 
    return "Not Present"
      
d = defaultdict(def_value)

d["pavan"]= "https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"
d["srikanth"]= "https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"
d["gary"]="https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"
d["sujith"]="https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"
d["datta"]="https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"
d["sanjay"]="https://oracle.zoom.us/j/7717491683?pwd=c0NRU1hkaWcxcWJTRi9FazBiT3lGUT09"