a script to check time taken by a student to complete his/her thesis in my university by scraping data through emails i've received from thesis manager.

research_time.py

import imaplib
import re
import time
from dotenv import load_dotenv
import os
import email
load_dotenv()

imap_ssl_host = 'imap.gmail.com'
imap_ssl_port = 993

def listen_new_email(username, password):
    stats = dict()
    server = imaplib.IMAP4_SSL(imap_ssl_host, imap_ssl_port)
    server.login(username, password)
    server.select(readonly=True)
    result, data = server.search(None, '(SUBJECT "MS Thesis Final Defence")')
    for i,num in enumerate(data[0].split()):
        try:
            #result, data = server.fetch(num, '(BODY[HEADER.FIELDS (SUBJECT FROM DATE)])')
            result, data = server.fetch(num, '(RFC822)')
            data_dict = data[0][1].decode()
            msg = str(email.message_from_bytes(data[0][1]))
            #open('/tmp/email.txt', 'w').write(str(msg))#print(msg)
            #regno = re.findall('Regn No.(.*?),', msg.replace('\n', ' '))[0]
            #date = re.findall('thesis on (.*?)in', msg.replace('\n', ' '))[0]
            #print(i,regno, date)
            
            index = msg.index('Fall')
            enroll_year = int(msg[index+5:index+9].replace('K', '0'))
            last_year = int(re.findall('\*\*(.*)\* \*@', msg.replace('\n', ' '))[0][-4:].replace('K', '0'))
            stats[last_year-enroll_year] = stats.get(last_year-enroll_year, 0) + 1
            print(i, enroll_year, last_year, stats)
        
            
        except Exception as e:
            print(e)
    with open('/tmp/research_stats.txt', 'w') as f:
        for i in list(stats.keys()).sort(reverse=True):
            f.write(f'{i}: {stat[i]}\n')
    server.logout()

def main():
    try:
        user, passw = os.getenv('USER'), os.getenv('PASS') # enter your username / pass here
        listen_new_email(user, passw)
    except Exception as ex:
        print(ex)
        raise Exception(str(ex))

if __name__=="__main__":
  main()