wordcloud.py

stopwords = set(STOPWORDS)
import random

foo = ['black','white']
for i in variety:
    subset=data[data['variety']==i]
    subset['description']=subset['description'].str.lower()
    subset['description2']=subset['description'].apply(lambda x: ' '.join([word for word in x.split() if word not in (stopwords)]))
    text = " ".join(review for review in subset.description2)
    wc = WordCloud(background_color=random.choice(foo), max_words=100, mask=transformed_wine_mask,
                   stopwords=stopwords, contour_width=3,min_word_length=4, contour_color='firebrick')

    # Generate a wordcloud
    wc.generate(text)
    st1="image/wine_"+i+"_.png"
    st2="wine_"+i+"_.png"

    # store to file
    wc.to_file(st1)
    wc.to_file(st2) 

-------Calling Image wordcloud in Dash App
def update_body_image(slider):
    str1="wine_"+"All"+"_.png"
    if(slider):
        str1="wine_"+slider+"_.png"
    
    image_filename = str1 # replace with your own image
    print(image_filename)
    encoded_image = base64.b64encode(open(image_filename, 'rb').read())
    src = 'data:image/png;base64,{}'.format(encoded_image.decode())  
    return src