simplefix_create_fix_message_with_fields_and_encode.py

1import simplefix
2
3# Create a message object
4msg = simplefix.FixMessage()
5
6# Add standard header fields
7msg.append_pair(8, "FIX.4.2")
8msg.append_pair(35, "D")  # MsgType: New Order Single
9
10# Add some body fields
11msg.append_pair(11, "ORDER_ID_001")
12msg.append_pair(21, "1")
13msg.append_pair(55, "AAPL")
14msg.append_pair(54, "1")  # Side: Buy
15msg.append_pair(60, "20231027-10:00:00")
16msg.append_pair(40, "2")  # OrdType: Limit
17msg.append_pair(44, "150.00")
18
19# Encode the message into a byte string for transmission
20buffer = msg.encode()
21
22print(buffer)