Create a Python Debt Reminder Tool with Scheduled Pop‑ups and One‑Click Executable

Introduction

This tutorial shows how to create a small Python tool that reminds a borrower to repay a loan. The script displays a pop‑up message at regular intervals, helping maintain good relationships while ensuring timely repayment.

Requirements

The tool relies on the following Python packages, which are included with Python 2.7.9+ or Python 3.4+:

pip – the standard package manager for installing Python libraries.

APScheduler – provides scheduling capabilities.

pywin32 – enables Windows API calls for displaying message boxes.

Install the necessary packages with:

pip install apscheduler pywin32

Code

The core script imports the required modules, defines a function to show the reminder, and sets up a scheduler that triggers the function every minute.

import win32api, win32con, time
from apscheduler.schedulers.blocking import BlockingScheduler

def DrunkWater():
    win32api.MessageBox(0, "你的欠款已逾期，为了不影响朋友间的感情，请尽快结清！", "还钱小助手", win32con.MB_OK)

scheduler = BlockingScheduler()
scheduler.add_job(DrunkWater, 'interval', minutes=1)

if __name__ == '__main__':
    while True:
        scheduler.start()
        time.sleep(1)

Packaging

To distribute the tool as a single executable, use PyInstaller . Install it via: pip install pyinstaller Then run the following command in the directory containing the script: pyinstaller -F -w demo.py The -F flag creates a one‑file bundle, and -w suppresses the console window.

Result

After packaging, the dist folder contains the executable that behaves exactly like the original demo.py script, showing the reminder pop‑up at the configured interval.