How to use the iroha.Iroha function in iroha

def send_tx(self):
            iroha = Iroha('admin@test')

            tx = iroha.transaction([iroha.command(
                'TransferAsset', src_account_id='admin@test', dest_account_id='test@test', asset_id='coin#test',
                amount='0.01', description=HOSTNAME
            )])
            ic.sign_transaction(tx, ADMIN_PRIVATE_KEY)
            self.client.send_tx_await(tx)

def send_tx(self):
            iroha = Iroha('admin@test')

            tx = iroha.transaction([iroha.command(
                'TransferAsset', src_account_id='admin@test', dest_account_id='test@test', asset_id='coin#test',
                amount='0.01', description=HOSTNAME
            )])
            ic.sign_transaction(tx, ADMIN_PRIVATE_KEY)

            self.client.send_tx(tx)

from iroha import IrohaCrypto
import os
import sys
import time
import uuid

if sys.version_info[0] < 3:
    raise Exception('Python 3 or a more recent version is required.')

IROHA_HOST_ADDR = os.getenv('IROHA_HOST_ADDR', '127.0.0.1')
IROHA_PORT = os.getenv('IROHA_PORT', '50051')
ADMIN_ACCOUNT_ID = os.getenv('ADMIN_ACCOUNT_ID', 'admin@test')
ADMIN_PRIVATE_KEY = os.getenv(
    'ADMIN_PRIVATE_KEY', 'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506cab70')

iroha = Iroha(ADMIN_ACCOUNT_ID)
net = IrohaGrpc('{}:{}'.format(IROHA_HOST_ADDR, IROHA_PORT))


def send_tx():
    rand_name = uuid.uuid4().hex
    rand_key = IrohaCrypto.private_key()
    domain = ADMIN_ACCOUNT_ID.split('@')[1]
    tx = iroha.transaction([
        iroha.command('CreateAccount',
                      account_name=rand_name,
                      domain_id=domain,
                      public_key=rand_key)
    ])
    IrohaCrypto.sign_transaction(tx, ADMIN_PRIVATE_KEY)
    net.send_tx(tx)
    print('tx is sent')

def bob_accepts_exchange_request():
    global net
    q = ic.sign_query(
        Iroha('bob@test').query('GetPendingTransactions'),
        bob_private_keys[0]
    )
    pending_transactions = net.send_query(q)
    for tx in pending_transactions.transactions_response.transactions:
        if tx.payload.reduced_payload.creator_account_id == 'alice@test':
            # we need do this temporarily, otherwise accept will not reach MST engine
            del tx.signatures[:]
        else:
            ic.sign_transaction(tx, *bob_private_keys)
    send_batch_and_print_status(
        pending_transactions.transactions_response.transactions)

def add_keys_and_set_quorum():
    alice_iroha = Iroha('alice@test')
    alice_cmds = [
        alice_iroha.command('AddSignatory', account_id='alice@test',
                            public_key=alice_public_keys[1]),
        alice_iroha.command('SetAccountQuorum',
                            account_id='alice@test', quorum=2)
    ]
    alice_tx = alice_iroha.transaction(alice_cmds)
    ic.sign_transaction(alice_tx, alice_private_keys[0])
    send_transaction_and_print_status(alice_tx)

    bob_iroha = Iroha('bob@test')
    bob_cmds = [
        bob_iroha.command('AddSignatory', account_id='bob@test',
                          public_key=bob_public_keys[1]),
        bob_iroha.command('SetAccountQuorum', account_id='bob@test', quorum=2)
    ]

def add_keys_and_set_quorum():
    alice_iroha = Iroha('alice@test')
    alice_cmds = [
        alice_iroha.command('AddSignatory', account_id='alice@test',
                            public_key=alice_public_keys[1]),
        alice_iroha.command('SetAccountQuorum',
                            account_id='alice@test', quorum=2)
    ]
    alice_tx = alice_iroha.transaction(alice_cmds)
    ic.sign_transaction(alice_tx, alice_private_keys[0])
    send_transaction_and_print_status(alice_tx)

    bob_iroha = Iroha('bob@test')
    bob_cmds = [
        bob_iroha.command('AddSignatory', account_id='bob@test',
                          public_key=bob_public_keys[1]),
        bob_iroha.command('SetAccountQuorum', account_id='bob@test', quorum=2)
    ]
    bob_tx = bob_iroha.transaction(bob_cmds)
    ic.sign_transaction(bob_tx, bob_private_keys[0])
    send_transaction_and_print_status(bob_tx)

from iroha import Iroha, IrohaGrpc
from iroha import IrohaCrypto
import sys
import os

if sys.version_info[0] < 3:
    raise Exception('Python 3 or a more recent version is required.')

IROHA_HOST_ADDR = os.getenv('IROHA_HOST_ADDR', '127.0.0.1')
IROHA_PORT = os.getenv('IROHA_PORT', '50051')
ADMIN_ACCOUNT_ID = os.getenv('ADMIN_ACCOUNT_ID', 'admin@test')
ADMIN_PRIVATE_KEY = os.getenv(
    'ADMIN_PRIVATE_KEY', 'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506cab70')

iroha = Iroha(ADMIN_ACCOUNT_ID)
net = IrohaGrpc('{}:{}'.format(IROHA_HOST_ADDR, IROHA_PORT))

def trace(func):
    """
    A decorator for tracing methods' begin/end execution points
    """

    def tracer(*args, **kwargs):
        name = func.__name__
        print('\tEntering "{}"'.format(name))
        result = func(*args, **kwargs)
        print('\tLeaving "{}"'.format(name))
        return result

    return tracer

def bob_declines_exchange_request():
    print("""
    
    IT IS EXPECTED HERE THAT THE BATCH WILL FAIL STATEFUL VALIDATION
    
    """)
    global net
    q = ic.sign_query(
        Iroha('bob@test').query('GetPendingTransactions'),
        bob_private_keys[0]
    )
    pending_transactions = net.send_query(q)
    for tx in pending_transactions.transactions_response.transactions:
        if tx.payload.reduced_payload.creator_account_id == 'alice@test':
            # we need do this temporarily, otherwise accept will not reach MST engine
            del tx.signatures[:]
        else:
            # intentionally alice keys were used to fail bob's txs
            ic.sign_transaction(tx, *alice_private_keys)
            # zeroes as private keys are also acceptable
    send_batch_and_print_status(
        pending_transactions.transactions_response.transactions)

from iroha.primitive_pb2 import can_set_my_account_detail
import sys

if sys.version_info[0] < 3:
    raise Exception('Python 3 or a more recent version is required.')


IROHA_HOST_ADDR = os.getenv('IROHA_HOST_ADDR', '127.0.0.1')
IROHA_PORT = os.getenv('IROHA_PORT', '50051')
ADMIN_ACCOUNT_ID = os.getenv('ADMIN_ACCOUNT_ID', 'admin@test')
ADMIN_PRIVATE_KEY = os.getenv(
    'ADMIN_PRIVATE_KEY', 'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506cab70')

user_private_key = IrohaCrypto.private_key()
user_public_key = IrohaCrypto.derive_public_key(user_private_key)
iroha = Iroha(ADMIN_ACCOUNT_ID)
net = IrohaGrpc('{}:{}'.format(IROHA_HOST_ADDR, IROHA_PORT))


def trace(func):
    """
    A decorator for tracing methods' begin/end execution points
    """

    def tracer(*args, **kwargs):
        name = func.__name__
        print('\tEntering "{}"'.format(name))
        result = func(*args, **kwargs)
        print('\tLeaving "{}"'.format(name))
        return result

    return tracer

IROHA_HOST_ADDR = os.getenv('IROHA_HOST_ADDR', '127.0.0.1')
IROHA_PORT = os.getenv('IROHA_PORT', '50051')
ADMIN_ACCOUNT_ID = os.getenv('ADMIN_ACCOUNT_ID', 'admin@test')
ADMIN_PRIVATE_KEY = os.getenv(
    'ADMIN_PRIVATE_KEY', 'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506cab70')

print("""

PLEASE ENSURE THAT MST IS ENABLED IN IROHA CONFIG

""")

if sys.version_info[0] < 3:
    raise Exception('Python 3 or a more recent version is required.')

iroha = Iroha(ADMIN_ACCOUNT_ID)
net = IrohaGrpc('{}:{}'.format(IROHA_HOST_ADDR, IROHA_PORT))

alice_private_keys = [
    'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506caba1',
    'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506caba2'
]
alice_public_keys = [ic.derive_public_key(x) for x in alice_private_keys]

bob_private_keys = [
    'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506caba3',
    'f101537e319568c765b2cc89698325604991dca57b9716b58016b253506caba4'
]
bob_public_keys = [ic.derive_public_key(x) for x in bob_private_keys]


def trace(func):