RPC batching example

rpc_batch_test.py

#!/usr/bin/env python3
'''
Example showing the use of RPC batching in Bitcoin Core.
'''
# W.J. van der Laan
# SPDX-License-Identifier: MIT
import sys,os
# just grab the library from the closest bitcoin instance
sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'bitcoin', 'test', 'functional')) 
from test_framework.authproxy import AuthServiceProxy, JSONRPCException

# use cookie from data directory (regtest)
datadir = os.getenv("DATADIR", os.path.join(os.getenv('HOME'), '.bitcoin', 'regtest'))
with open(os.path.join(datadir,'.cookie'),'r') as f:
    cookie = f.read()
prox = AuthServiceProxy('http://'+cookie+'@127.0.0.1:18443/')

# list of addresses to import
addresses = [
'a',
'b',
'c'
]

batch = []
reqid = 0
for addr in addresses:
    batch.append({'version': '1.1',
               'method': 'importaddress',
               'params': [addr, '', False],
               'id': reqid})
    reqid += 1

responses = prox.batch(batch)

for r in responses:
    if r['error'] is not None:
        print('Request %i failed with error %i: %s' % (r['id'], r['error']['code'], r['error']['message']))
    else:
        print('Request %i succeeded: %s' % (r['id'], str(r['result'])))