调度库 TypeError：第一个参数必须是可调用的

Question

I'm trying to make a gmail bot that sends the same message repeatedly in a time period (for example every hour). Here's what I did:

import smtplib
import time
import schedule

sender_email = input("enter ur e-mail: ")
rec_email = input("enter receiver e-mail: ")
password = input("enter your password: ")
message = input("enter message\n-")


def thankyou(sender_email, rec_email, password, message):
    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(sender_email, password)
    print("login successful")
    server.sendmail(sender_email, rec_email, message)
    print("sent")


schedule.every().hour.do(thankyou(sender_email, rec_email, password, message))
while 1:
    schedule.run_pending()
    time.sleep(1)

Answer 1

By passing thankyou(sender_email, rec_email, password, message) to schedule.every().hour.do() , you're passing the result of calling thankyou with those arguments. Since thankyou returns nothing, you're doing the equivalent of schedule.every().hour.do(None) . You should instead pass a function, like a lambda function, that calls thankyou with the arguments you want:

schedule.every().hour.do(lambda: thankyou(sender_email, rec_email, password, message))

Answer 2

it's because your passing schedule.every().hour.do() the return of thankyou() , not the function itself, try:

schedule.every().hour.do(lambda:thankyou(sender_email, rec_email, password, message))