according privatekey export keystore

privatekey_export_keystore.py

# pip3 install web3

from web3 import Web3
import json

# network = "https://ropsten.infura.io/your_key"
network = "http://127.0.0.1:8545"

web3 = Web3(Web3.HTTPProvider(network))

private_key = "55dcb09dc6afc5c34ec6b4879ede6c08b20bcf129d4fc158b820983c369d3536"
passwd = ""

try:

    keystore = web3.eth.account.encrypt(private_key, passwd)
    print(json.dumps(keystore))

except Exception as e:
    print(e)