pyfwf 1.0.0

Python library to manipulate fixed width file (FWF)

Python FWF

Python library for reading and manipulating fixed-width files (FWF).

Features

• 📖 Read fixed-width format files with custom column definitions
• 🔧 Support for typed columns (integer, decimal, date, time, etc.)
• 📋 Header and footer row handling
• 🎯 Simple and intuitive API
• ✅ Fully tested (100% coverage)

Installation

pip install pyfwf

Quick Start

from pyfwf.columns import CharColumn, PositiveIntegerColumn
from pyfwf.descriptors import DetailRowDescriptor, FileDescriptor
from pyfwf.readers import Reader

# Define columns
detail = DetailRowDescriptor([
    CharColumn(name='name', pos=1, size=20),
    PositiveIntegerColumn(name='age', pos=21, size=3),
])

# Create file descriptor
fd = FileDescriptor(line_size=23, details=[detail])

# Read file
with open('data.fwf', 'r') as f:
    reader = Reader(f, fd)
    for row in reader:
        print(row)

Supported Column Types

• CharColumn - Text data
• RightCharColumn - Right-aligned text
• PositiveIntegerColumn - Positive integers
• PositiveDecimalColumn - Decimal numbers
• DateColumn - Date values
• TimeColumn - Time values
• DateTimeColumn - DateTime values

Documentation

See docs/ for detailed documentation and examples.

License

MIT License © 2015 Umbrella Tech

Author

Kelson da Costa Medeiros [e-mail]