application.py

from flask import Flask, render_template, request,jsonify
from flask_cors import CORS,cross_origin
import requests
from bs4 import BeautifulSoup as bs
from urllib.request import urlopen as uReq
import pymongo

application = Flask(__name__) # initializing a flask app
app=application

@app.route('/',methods=['GET'])  # route to display the home page
@cross_origin()
def homePage():
    return render_template("index.html")

@app.route('/review',methods=['POST','GET']) # route to show the review comments in a web UI
@cross_origin()
def index():
    if request.method == 'POST':
        try:
            searchString = request.form['content'].replace(" ","")
            flipkart_url = "https://www.flipkart.com/search?q=" + searchString
            uClient = uReq(flipkart_url)
            flipkartPage = uClient.read()
            uClient.close()
            flipkart_html = bs(flipkartPage, "html.parser")
            bigboxes = flipkart_html.findAll("div", {"class": "_1AtVbE col-12-12"})
            del bigboxes[0:3]
            box = bigboxes[0]
            productLink = "https://www.flipkart.com" + box.div.div.div.a['href']
            prodRes = requests.get(productLink)
            prodRes.encoding='utf-8'
            prod_html = bs(prodRes.text, "html.parser")
            print(prod_html)
            commentboxes = prod_html.find_all('div', {'class': "_16PBlm"})

            filename = searchString + ".csv"
            fw = open(filename, "w")
            headers = "Product, Customer Name, Rating, Heading, Comment \n"
            fw.write(headers)
            reviews = []
            for commentbox in commentboxes:
                try:
                    #name.encode(encoding='utf-8')
                    name = commentbox.div.div.find_all('p', {'class': '_2sc7ZR _2V5EHH'})[0].text

                except:
                    name = 'No Name'

                try:
                    #rating.encode(encoding='utf-8')
                    rating = commentbox.div.div.div.div.text


                except:
                    rating = 'No Rating'

                try:
                    #commentHead.encode(encoding='utf-8')
                    commentHead = commentbox.div.div.div.p.text

                except:
                    commentHead = 'No Comment Heading'
                try:
                    comtag = commentbox.div.div.find_all('div', {'class': ''})
                    #custComment.encode(encoding='utf-8')
                    custComment = comtag[0].div.text
                except Exception as e:
                    print("Exception while creating dictionary: ",e)

                mydict = {"Product": searchString, "Name": name, "Rating": rating, "CommentHead": commentHead,
                          "Comment": custComment}
                reviews.append(mydict)
            client = pymongo.MongoClient("mongodb+srv://pwskills:pwskill@cluster0.yvpep29.mongodb.net/?retryWrites=true&w=majority")
            db = client['review_scrap']
            review_col = db['review_scrap_data']
            review_col.insert_many(reviews)
            return render_template('results.html', reviews=reviews[0:(len(reviews)-1)])
        except Exception as e:
            print('The Exception message is: ',e)
            return 'something is wrong'
    # return render_template('results.html')

    else:
        return render_template('index.html')

if __name__ == "__main__":
    app.run(host='127.0.0.1', port=8000, debug=True)
	#app.run(debug=True)