DataTrade Processing

[!IMPORTANT] Project development has moved to Codeberg.

Overview

DataTrade Processing is a robust, high-performance Python library designed for processing and analyzing international trade data for Puerto Rico. Built on top of Polars, the project employs a configuration-driven design to handle dynamic aggregation, unit conversions, and advanced rolling statistical analysis across various taxonomy levels and time frames.

Key Features

• High-Performance Processing: Leverages Polars DataFrames for fast, memory-efficient data manipulation and aggregation.

• Flexible Data Sources: Supports ingestion from both organizational (org) and JP-specific (jp) trade data sources.

• Multi-Level Classification: Aggregate metrics by:

  • Total trade (total)
  • Harmonized Tariff Schedule code (hts)
  • North American Industry Classification System code (naics)
  • Country (country)

• Flexible Time Frames: Group trade data by calendar year, fiscal year (beginning in July), quarter, or month.

• Granular Filtering: Filter data dynamically by date ranges, specific calendar years, agricultural indicators (agri_prod), and taxonomy code prefixes.

• Standardized Unit Conversions: Automatically normalizes diverse source units (kilograms, liters, metric tons, dozens, cubic meters, grams, etc.) into a unified metric representation.

• Advanced Price Analysis (process_price):

  • Computes HS4-level import and export unit prices.
  • Calculates 3-month rolling averages and standard deviations.
  • Derives statistical price bands ($\pm 2\sigma$) and monthly market rankings.
  • Evaluates year-over-year percentage changes and ranking shifts.

Requirements

• Python: 3.10 or higher
• Core Dependencies: polars
• Development/Testing Dependencies: pytest
• External Dependencies: pr-imports

Installation

Clone the repository and set up your environment using your preferred package or environment manager:

git clone https://codeberg.org/gitinference/jp-imports.git
cd jp-imports

# Using devenv (recommended if configured)
devenv shell --profile dev

# Or via standard pip requirements
pip install -r requirements.txt

Usage

Initializing JPTrade

The core processing logic is encapsulated within the JPTrade class. By default, processed outputs are written to a local data/ directory and logs are recorded in data.log.

from jp_imports.jp_imports import JPTrade

# Initialize with default settings

trade = JPTrade()

# Or specify custom directories and logs

trade = JPTrade(saving_dir="data/", log_file="data.log")

Processing International Trade Data

Use the process_int_jp() method to load, filter, convert, and aggregate trade datasets.

result = trade.process_int_jp(
    level="total",
    time_frame="yearly",
)

Supported Parameters

Price Analysis Pipeline

To generate rolling price metrics, unit costs, bands, and year-over-year variations at the HS4 classification level over a 3 month window, use process_price():

# Standard price processing

prices = trade.process_price()

# Isolated for agricultural commodities

ag_prices = trade.process_price(agriculture_filter=True)

Running Tests

Execute the test suite using pytest:

pytest

Project Architecture

jp-imports/
├── src/
│   └── jp_imports/
│       ├── jp_imports.py
│       └── resources/
│           └── code_agr.json
├── tests/
├── requirements.txt
├── environment.yml
├── README.md
└── LICENSE

License

Distributed under the GPL v3 License. See LICENSE for more information.