text_html_output_1.png
import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

df = pd.read_csv('../input/hackerearth-love-in-the-time-of-screens/data.csv')

df.drop(columns=['user_id', 'username'], inplace=True)

df.shape

lan = []
for i in df['language']:
    l = i.split(',')
    for j in l:
        if j not in lan:
            lan.append(j)
print(len(lan))