我什么都不退

Question

我试图创建一个脚本，将检查是否有一个事件预计今天发生，然后，它将发送一封邮件。不幸的是，我被一些相当愚蠢的事情困住了。我不知道为什么我的代码在应该返回的时候没有从数据库返回任何东西

# Enviar correu Python 3.6 (NO ANOMENAR EMAIL.PY)
import smtplib, pymysql.cursors, secrets, re, datetime
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from time import strftime

def dbb():
    connection = pymysql.connect(host='X',
                                 user='root',
                                 password='X',
                                 db='deuresc',
                                 charset='utf8mb4',
                                 cursorclass=pymysql.cursors.DictCursor)
    try:
        with connection.cursor() as cursor:
            # Llegim tots els recordatoris
            dataactual = strftime('%Y-%m-%d')
            data = datetime.datetime.strptime(dataactual, "%Y-%m-%d")
            datafinal = data + datetime.timedelta(days=1)
            sql = "SELECT * FROM `deures` WHERE `data`=%s"
            cursor.execute(sql, datafinal)
            resultat = cursor.fetchall()

            for row in resultat:
                data = str(row['data'])
                print(data)
                tasca = str(row['tasca'])
                print(tasca)

            fromaddr = "X"
            PASSWORD = "X"

            welcome = ['Jefe', 'Gery', 'Boss', 'Gary']

            # Misstage del correu
            SUBJECT = "Recordatori deures " + data
            body = "Bon dia " + secrets.choice(welcome) + ',' +  '\n' + 'Tens les següents tasques programades per demà: ' + '\n' + data + ' ' + tasca
            toaddr = "X"

            try:
                msg = MIMEMultipart()
                msg['From'] = fromaddr
                msg['To'] = toaddr
                msg['Subject'] = SUBJECT

                msg.attach(MIMEText(body, 'plain'))

                # Detalles del servidor de correu (Gmail, SMTP, Port: 587, TLS)
                server = smtplib.SMTP('smtp.gmail.com', 587)
                server.starttls()
                server.login(fromaddr, PASSWORD)
                text = msg.as_string()
                server.sendmail(fromaddr, toaddr, text)
                server.quit()
                print("S'ha enviat el recordatori a '" + toaddr + "' satisfactoriament!")
            except:
                print("S'ha produït un error!")
    finally:
        connection.close()

数据库（）

目前DB行：

新代码工作编辑