40 Algorithms Every Programmer Should Know

A practical example – Twitter real-time sentiment analysis

Twitter is said to have almost 7,000 tweets every second on a wide variety of topics. Let's try to build a sentiment analyzer that can capture the emotions of the news from different news sources in real time. We will start by importing the required packages:

1. Import the needed packages:

import tweepy,json,timeimport numpy as npimport pandas as pdimport matplotlib.pyplot as pltfrom vaderSentiment.vaderSentiment import SentimentIntensityAnalyzeranalyzer = SentimentIntensityAnalyzer()

Note that we are using the following two packages:

2. VADER sentiment analysis, which stands for Valence Aware Dictionary and Sentiment Reasoner. It is one of the popular rule-based sentiment analysis tools ...