message: Last format update
diff: @@ -117,7 +117,7 @@ def export_ricardian_from_abi(source_abi):
  contract_name = os.path.split(source_abi)[1].rpartition(".")[0]
  if not os.path.exists(source_abi):
  - print(f'Source ABI not found in {source_abi}')
  + print('Source ABI not found in {source_abi}'.format(source_abi = source_abi))
  sys.exit(0)
  with open(source_abi, 'r') as source_abi_file:
  