How to Create A Cryptocurrency Analysis App Using Python

Introduction

Cryptocurrency briefly is digital money that uses cryptography for security and operates independently of central banks or governments. In this tutorial, we will be building a Flask app that analyses different cryptocurrencies in the market.

Install modules

To begin we will first install a few modules such as Flask which will serve as our primary web server, requests which will be used to make HTTP requests. To install the modules above run the commands shown below on your terminal.

pip3 install FLask

pip3 install requests

File structure

Now let’s create a folder called crypto-app and create a folder called templates with a file index.html in it. Now in the crypto-app folder create a file called app.py which will bear our backend code.

Import modules

Our application will be using the coinstats API to fetch different cryptocurrencies. To begin let’s first import a few modules as shown below.

from flask import Flask , request, render_template
import requests

Next, let’s define a few variables as shown below.

url = 'https://api.coinstats.app/public/v1/coins'
params = {'skip': 0, 'limit':40}
response = requests.get(url, params=params).json()

Above is the URL where the data lie, next we pass the parameters onto our request such as the number of cryptocurrencies we need to get per request Next let’s create a view to display the data to the browser.

app = Flask(__name__)
@app.route('/')
def index():
    data = response['coins']
    return render_template("index.html",data=data)



if __name__ == "__main__":
    app.run(debug=True)

Now let’s create a template to display the data above. In the template we created earlier let’s insert the code below.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <style>
        .card {
            text-align: center;
        }
        .crypto {
            text-align: center;
            
        }

    </style>
    <div class="crypto">
        <h1>Crypto Statistics</h1>
    </div>
    <div class="card">
        {% for i in data %}
        <div>
            <h3>{{ i.name}}</h3>
            <p>Rank : {{ i.rank}}</p>
            <p>Price : {{ i.price}}</p>
            <p>Price BTC  : {{i.priceBtc}}</p>
            <p>Volume : {{i.volume}}</p>
            <p>MarketCap : {{ i.marketCap }}</p>
            <p>Available Supply : {{i.availableSupply }}</p>
            <p>Total Supply : {{  i.totalSupply}}</p>
            <p>Price Change 1h : {{ i.priceChange1h }}</p>
            <p>Price Change 1d: {{ i.priceChange1d }}</p>
            <p>Price Change 1w : {{ i.priceChange1w }}</p>
            <a href="{{i.websiteUrl}}">{{i.websiteUrl}}</a>
        </div>
    {% endfor %}
    </div>
</body>
</html>