app.py

from flask import Flask, request, render_template, redirect,url_for
from werkzeug.utils import secure_filename
from azure.storage.blob import BlobServiceClient
import os
app = Flask(__name__)
#Details of azure account
app.config.from_pyfile('config.py')
account = app.config['ACCOUNT_NAME']   # Azure account name
key = app.config['ACCOUNT_KEY']      # Azure Storage account access key  
connect_str = app.config['CONNECTION_STRING']
container = app.config['CONTAINER'] # Container name
allowed_ext = app.config['ALLOWED_EXTENSIONS'] # List of accepted extensions

blob_service_client = BlobServiceClient.from_connection_string(connect_str)
def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1] in allowed_ext

@app.route('/upload',methods=['POST'])
def upload():
    if request.method == 'POST':
        imgages = request.files.getlist("file")
        for img in imgages:
            if img and allowed_file(img.filename):
                filename = secure_filename(img.filename)
                img.save(filename)
                blob_client = blob_service_client.get_blob_client(container = container, blob = filename)
                with open(filename, "rb") as data:
                    try:
                        blob_client.upload_blob(data, overwrite=True)
                        msg = "File Uploaded successfully "
                    except:
                        pass
                os.remove(filename)
    return render_template("index.html")
@app.route('/')
def home():
    return render_template('index.html')
@app.route('/calculate')
def calculate():
    return render_template('chart.html')
@app.route('/calculateWR')
def calculateWR():
    return render_template('chart2.html')