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Sentiment Detector GUI using Tkinter – Python
  • Last Updated : 18 Jan, 2021
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Prerequisites : Introduction to tkinter | Sentiment Analysus using Vader

Python offers multiple options for developing a GUI (Graphical User Interface). Out of all the GUI methods, Tkinter is the most commonly used method. Python with Tkinter outputs the fastest and easiest way to create GUI applications. In this article, we will learn how to create a Sentiment Detector GUI application using Tkinter, with a step-by-step guide.
 

To create a tkinter :

  • Importing the module – tkinter
  • Create the main window (container)
  • Add any number of widgets to the main window.
  • Apply the event Trigger on the widgets.

The GUI would look like below:



Let’s create a GUI based Sentiment Detector application that can show the sentiments with respect to the given sentences, given by the user.
 

Below is the implementation : 

Python3




# import SentimentIntensityAnalyzer class
# from vaderSentiment.vaderSentiment module.
from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
 
# import all methods and classes from the tkinter
from tkinter import *
 
# Function for clearing the  
# contents of all entry boxes
# And text area.
def clearAll() :
   
    # deleting the content from the entry box
    negativeField.delete(0, END)
    neutralField.delete(0, END)
    positiveField.delete(0, END)
    overallField.delete(0, END)
 
    # whole content of text area  is deleted
    textArea.delete(1.0, END)
     
# function to print sentiments
# of the sentence.
def detect_sentiment():
 
    # get a whole input content from text box
    sentence = textArea.get("1.0", "end")
 
    # Create a SentimentIntensityAnalyzer object.
    sid_obj = SentimentIntensityAnalyzer()
 
    # polarity_scores method of SentimentIntensityAnalyzer
    # oject gives a sentiment dictionary.
    # which contains pos, neg, neu, and compound scores.
    sentiment_dict = sid_obj.polarity_scores(sentence)
 
    string = str(sentiment_dict['neg']*100) + "% Negative"
    negativeField.insert(10, string)
     
 
    string = str(sentiment_dict['neu']*100) + "% Neutral"
    neutralField.insert(10, string)
 
    string = str(sentiment_dict['pos']*100) +"% Positive"
    positiveField.insert(10, string)
     
    # decide sentiment as positive, negative and neutral
    if sentiment_dict['compound'] >= 0.05 :
        string = "Positive"
 
    elif sentiment_dict['compound'] <= - 0.05 :
        string = "Negative"
      
 
    else :
        string = "Neutral"
 
    overallField.insert(10, string)
         
 
 
# Driver Code
if __name__ == "__main__" :
     
 
    # Create a GUI window
    gui = Tk()
     
    # Set the background colour of GUI window
    gui.config(background =  "light green")
 
    # set the name of tkinter GUI window
    gui.title("Sentiment Detector")
 
    # Set the configuration of GUI window
    gui.geometry("250x400")
 
    # create a label : Enter Your Task
    enterText = Label(gui, text = "Enter Your Sentence",
                                     bg = "light green")
 
    # create a text area for the root
    # with lunida 13 font
    # text area is for writing the content
    textArea = Text(gui, height = 5, width = 25, font = "lucida 13")
 
    # create a Submit Button and place into the root window
    # when user press the button, the command or 
    # function affiliated to that button is executed 
    check = Button(gui, text = "Check Sentiment", fg = "Black",
                         bg = "Red", command = detect_sentiment)
 
    # Create a negative : label
    negative = Label(gui, text = "sentence was rated as: ",
                                        bg = "light green")
   
    # Create a neutral : label
    neutral = Label(gui, text = "sentence was rated as: ",
                                       bg = "light green")
   
    # Create a positive : label
    positive = Label(gui, text = "sentence was rated as: ",
                                        bg = "light green")
 
    # Create a overall : label
    overall = Label(gui, text = "Sentence Overall Rated As: ",
                                           bg = "light green")
 
    # create a text entry box 
    negativeField = Entry(gui)
 
    # create a text entry box 
    neutralField = Entry(gui)
 
    # create a text entry box 
    positiveField = Entry(gui)
 
    # create a text entry box 
    overallField = Entry(gui)
 
    # create a Clear Button and place into the root window
    # when user press the button, the command or 
    # function affiliated to that button is executed .
    clear = Button(gui, text = "Clear", fg = "Black",
                      bg = "Red", command = clearAll)
     
    # create a Exit Button and place into the root window
    # when user press the button, the command or 
    # function affiliated to that button is executed .
    Exit = Button(gui, text = "Exit", fg = "Black",
                        bg = "Red", command = exit)
 
    # grid method is used for placing 
    # the widgets at respective positions 
    # in table like structure.
    enterText.grid(row = 0, column = 2)
     
    textArea.grid(row = 1, column = 2, padx = 10, sticky = W)
     
    check.grid(row = 2, column = 2)
     
    negative.grid(row = 3, column = 2)
     
    neutral.grid(row = 5, column = 2)
     
    positive.grid(row = 7, column = 2)
     
    overall.grid(row = 9, column = 2)
     
    negativeField.grid(row = 4, column = 2)
 
    neutralField.grid(row = 6, column = 2)
                       
    positiveField.grid(row = 8, column = 2)
     
    overallField.grid(row = 10, column = 2)
     
    clear.grid(row = 11, column = 2)
     
    Exit.grid(row = 12, column = 2)
 
    # start the GUI
    gui.mainloop()
    

Output : 


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