example.py

from ach.builder import AchFile

settings = {
    "immediate_dest": "123456780",
    "immediate_org": "123456780",
    "immediate_dest_name": "YOUR BANK",
    "immediate_org_name": "YOUR COMPANY",
    "company_id": "1234567890",  # tax number
}

ach_file = AchFile("A", settings)  # file Id mod

entries = [
    {
        "type": "22",  # type of
        "routing_number": "12345678",
        "account_number": "11232132",
        "amount": "10.00",
        "name": "Alice Wanderdust",
        "addenda": [
            {
                "payment_related_info": "Here is some additional information",
            },
        ],
    },
    {
        "type": "27",
        "routing_number": "12345678",
        "account_number": "234234234",
        "amount": "150.00",
        "name": "Billy Holiday",
    },
    {
        "type": "22",
        "routing_number": "123232318",
        "account_number": "123123123",
        "amount": "12.13",
        "name": "Rachel Welch",
    },
]

ach_file.add_batch("PPD", entries, credits=True, debits=True)

print ach_file.render_to_string()

# add_batch will skip failures and return them

ach_file = AchFile("B", settings)  # file Id mod

entries = [
    {
        "type": "27",
        "routing_number": "********",  # invalid
        "account_number": "********",  # invalid
        "amount": "150.00",
        "name": "Billy Holiday",
    },
    {
        "type": "22",
        "routing_number": "123232318",
        "account_number": "123123123",
        "amount": "12.13",
        "name": "Rachel Welch",
    },
]

print ach_file.add_batch("PPD", entries, credits=True, debits=True)

print ach_file.render_to_string()