Bitcoin Core Test Framework

Python framework used by Bitcoin Core's own test suite. Located in test/functional/ of the bitcoin/bitcoin repo.

Architecture

from test_framework.test_framework import BitcoinTestFramework

class MyTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 2
        self.extra_args = [["-fallbackfee=0.00001"], []]