Hello please.
I would like to update the data for my gauge every time a user click on a
button.
The data are simply variable from flask that I would like to use to draw
the chart.
So far I know that I can use jinja2 to transfer them to my script but
that's about it.
I don't know where to start please help.
My code is below :
app.py
from flask import Flask, request, render_template
from textblob import TextBlob
import requests, re
from bs4 import BeautifulSoup
from pprint import pprint
app = Flask(__name__)
@app.route('/', methods=['GET','POST'])
def rootpage():
finalsub = None
finalsent = None
newsp = []
if request.method == 'POST' and 'search-term' in request.form:
SearchTerm = request.form.get('search-term')
print(SearchTerm)
a = Analysis(SearchTerm)
a.run()
print(a.term, 'Subjectivity: ', a.subjectivity, 'Sentiment: ',
a.sentiment)
finalsub = a.subjectivity
finalsent = a.sentiment
newsp = a.news
return render_template("index.html", finalsub=finalsub,
finalsent=finalsent, newsp=newsp)
class Analysis:
def __init__(self, term):
self.term = term
self.subjectivity = 0
self.sentiment = 0
self.news = []
self.url =
'https://www.google.com/search?q={0}&source=lnms&tbm=nws'.format(self.term)
def run(self):
response = requests.get(self.url)
# print(response.text)
soup = BeautifulSoup(response.text, 'html.parser')
mainDiv = soup.find("div", {"id": "main"})
posts = [i for i in mainDiv.children][3:-2]
for post in posts:
reg = re.compile(r"^/url.*")
cursor = post.findAll("a", {"href": reg})
postData = {}
postData["headline"] = cursor[0].find("div").get_text()
postData["source"] = cursor[0].findAll("div")[1].get_text()
postData["timeAgo"] =
cursor[1].next_sibling.find("span").get_text()
postData["description"] =
cursor[1].next_sibling.find("span").parent.get_text().split("ยท ")[1]
self.news.append(postData)
pprint(self.news)
for h in self.news:
blob = TextBlob(h["headline"] + " " + h["description"])
self.sentiment += blob.sentiment.polarity / len(self.news)
self.subjectivity += blob.sentiment.subjectivity /
len(self.news)
app.run()
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Sentiment Quick Check</title>
<link rel="stylesheet" type="text/css" href="{{url_for('static',
filename='style.css')}}">
<link rel="stylesheet"
href="https://unpkg.com/[email protected]/build/pure-min.css";
integrity="sha384-oAOxQR6DkCoMliIh8yFnu25d7Eq/PHS21PClpwjOTeU2jRSq11vu66rf90/cZr47"
crossorigin="anonymous">
<script type="text/javascript"
src="https://www.gstatic.com/charts/loader.js";></script>
<script type="text/javascript">
google.charts.load('current', {'packages':['gauge']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var finalsub = '{{finalsub}}'
var finalsent = '{{finalsent}}'
var data = google.visualization.arrayToDataTable([
['Label', 'Value'],
['Subjectivity', 80],
['Sentiment', 55],
]);
var options = {
width: 800, height: 240,
redFrom: 180, redTo: 200,
yellowFrom:150, yellowTo: 180,
minorTicks: 10
};
var chart = new
google.visualization.Gauge(document.getElementById('chart_div'));
chart.draw(data, options);
setInterval(function() {
data.setValue(0, 1, 40 + Math.round(60 * Math.random()));
chart.draw(data, options);
}, 13000);
setInterval(function() {
data.setValue(1, 1, 40 + Math.round(60 * Math.random()));
chart.draw(data, options);
}, 5000);
setInterval(function() {
data.setValue(2, 1, 60 + Math.round(20 * Math.random()));
chart.draw(data, options);
}, 26000);
}
</script>
</head>
<body>
<h1>Google News Sentiment Analysis</h1>
<div class="posbox">
<form class="pure-form" method="POST" action="/">
<input type="text" name="search-term" class="pure-input-2-3">
<button class="button-secondary pure-button">Sentiment</button>
</form>
</div>
<br>
<div class="posbox2">
<div class="childposbox1" id="chart_div" style="width: 400px; height:
120px;"></div>
<br>
<div>
{% if newsp %}
<marquee behavior="scroll" direction="down">{{newsp}}</marquee>
{% endif %}
</div>
</div>
</body>
</html>
The button in the form will be the one listening to the event.
Please help.
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