How to perform RPC call system.properties() using py-substrate-interface?

Question

Is there a way to the RPC call output of system.properties() using the py-substrate-interface? I want to access the token name and decimals as shown below (based on this link)

{
  ss58Format: 2
  tokenDecimals: [
    12
  ]
  tokenSymbol: [
    KSM
  ]
}

Answer 1

The python interface provides convenience functions for this:

from substrateinterface import SubstrateInterface

client = SubstrateInterface(
    url="wss://kusama-rpc.polkadot.io/",
    ss58_format=2,
    type_registry_preset='kusama'
)

# Prints: {'ss58Format': 2, 'tokenDecimals': 12, 'tokenSymbol': 'KSM'}
print(client.properties)

If there is a method missing, you can manually use client.rpc_request("system_properties", []).get('result') instead.