simplefix_create_fix_message_with_order_fields_and_encode.py

1import simplefix
2
3# Create a FixMessage object
4msg = simplefix.FixMessage()
5
6# Add standard header fields
7msg.append_pair(8, "FIX.4.2")
8msg.append_pair(35, "D")  # New Order Single
9msg.append_pair(49, "SENDER")
10msg.append_pair(56, "TARGET")
11msg.append_pair(34, 1)
12msg.append_pair(52, "20230101-12:00:00")
13
14# Add application fields
15msg.append_pair(11, "ORDER123")
16msg.append_pair(21, "1")
17msg.append_pair(55, "AAPL")
18msg.append_pair(54, "1")  # Buy
19msg.append_pair(60, "20230101-12:00:00")
20msg.append_pair(38, 100)
21msg.append_pair(40, "2")  # Limit
22msg.append_pair(44, 150.00)
23
24# Encode the message to a byte string
25buffer = msg.encode()
26
27print(buffer)