Currency Exchange Rate Tracker

This project is a web application that allows users to track and visualize relative changes in currency exchange rates for various countries over a selected date range. The application is built using Python, following an Object-Oriented Programming (OOP) approach, and runs within its own virtual environment.

Table of Contents

• Features
• Prerequisites
• Installation
• Usage
• Structure
• Example Plot

Features

• Currency Rate Fetching: Fetches exchange rates for USD, EUR, GBP, JPY, TRY, INR, and CNY for a user-specified date range from finmarket.ru.
• Country Currency Data: Retrieves and updates the list of world currencies from iban.ru.
• Data Synchronization: Synchronizes fetched data with a local SQLite database, ensuring only changed or new records are updated.
• Relative Rate Calculation: Calculates and stores relative changes in exchange rates for each country, based on a user-selected reference date.
• Interactive Web Interface: Users can visualize relative changes in currency rates for selected countries over a chosen date range.

Prerequisites

• Python 3.7+
• Virtual Environment (venv)
• Internet connection for fetching data

Installation

1. Clone the Repository:

   git clone https://github.com/qwer112358/python_intern.git
   cd currencyProject

2. Set up the Virtual Environment:

   python3 -m venv venv
   source venv/bin/activate   # On Windows use `venv\Scripts\activate`

3. Install Dependencies:

   pip install -r requirements.txt

Usage

1. Run the Web Application:

   python manage.py runserver

2. Access the Application:

   Open your web browser and navigate to http://127.0.0.1:8000/.

3. Interact with the Interface:

   • Select a date range to fetch currency exchange rates.
   • Choose countries and date ranges to visualize relative changes in currency rates.

Structure

• main/models.py: Contains the database models for storing currency and country data.
• main/views.py: Handles web requests and responses, rendering HTML templates.
• main/utils/scraper.py: Contains classes and methods for fetching and processing data from external sources.
• main/utils/SyncDB.py: Contains logic for calculating relative currency changes.
• main/utils/CurrencyPlot.py: Handles the creation and encoding of plots for visualizing relative changes in currency rates using Matplotlib and Pandas.
• main/templates/: HTML templates for the web interface.

Example Plot

Here is an example of a plot generated by the CurrencyPlot class, showing the relative changes in currency rates:

To see plots in action, run the application and navigate to the visualization interface where you can select countries and date ranges to generate similar plots.