fixedwidth_library_quickstart_parse_and_generate_records.py

1from fixedwidth import FixedWidth
2
3# Define the configuration for the fixed-width record
4config = {
5    "first_name": {
6        "length": 10,
7        "start_pos": 1,
8        "type": "string",
9        "alignment": "left",
10        "padding": " "
11    },
12    "last_name": {
13        "length": 10,
14        "start_pos": 11,
15        "type": "string",
16        "alignment": "left",
17        "padding": " "
18    },
19    "age": {
20        "length": 3,
21        "start_pos": 21,
22        "type": "integer",
23        "alignment": "right",
24        "padding": "0"
25    }
26}
27
28# Create a FixedWidth object with the config
29fw = FixedWidth(config)
30
31# Provide a line of data to parse
32data = "John      Doe       030"
33fw.line = data
34
35# Access the parsed data as a dictionary
36print(fw.data)
37# Output: {'first_name': 'John', 'last_name': 'Doe', 'age': 30}
38
39# Update values and generate a new fixed-width string
40fw.update_dict(first_name="Jane", age=25)
41print(fw.line)
42# Output: 'Jane      Doe       025'