Get a value from Vault

vault-get.py

import sys
import hvac
import os

if(len(sys.argv) > 2 or len(sys.argv) == 1):
  print("Error only key should be an argument")
  quit()

var = sys.argv[1]

vault_client = hvac.Client(url=os.environ['VAULT_HOST'])
vault_client.auth_userpass(os.environ['VAULT_USERNAME'], os.environ['VAULT_PASSWORD'])
data = vault_client.read('secret/'+os.environ['VAULT_KEY'])['data']
for key, value in data.items():
  if(key == var):
    print value