How to Send Real‑Time Alerts to WeChat Using Python’s wechat_sender

Introduction

In many companies, alarm messages are sent to DingTalk groups, allowing immediate response when a service fails. The author wondered whether the same instant notification could be achieved through a personal social tool like WeChat.

Using the official WeChat public platform or Enterprise WeChat requires a complex registration process, making it unsuitable for quick personal alerts.

Fortunately, the protocol of the web version of WeChat has been reverse‑engineered and wrapped into libraries such as wxpy , enabling developers to control a personal WeChat account programmatically.

wechat_sender

wechat_sender is a tool built on wxpy and tornado that can send various messages (logs, alerts, execution results, etc.) from websites, crawlers, scripts, or other applications to WeChat.

To use it, you only need a personal WeChat account; after logging in, you start the wechat_sender service. pip install wechat_sender Log in to WeChat and start the wechat_sender service.

From another script, send a message to WeChat.

wechat_sender can be integrated as a logging handler, allowing existing projects to forward logs to WeChat without code changes—just add a wechat_sender log handler to your logger.

Example configuration (illustrated in the image below):

Final result looks like this:

Beyond log alerts, wechat_sender can also be used for schedule or meeting reminders.

It supports periodic and delayed messages:

If the request succeeds, you will receive a reminder after the specified delay (e.g., a message scheduled one hour later will arrive after one minute).

Other Use Cases

As a developer with limited access to corporate physiotherapy appointments, the author wrote a monitoring script that checks for available slots and sends the booking link via WeChat when a slot opens.

The script runs as a Celery periodic task on a server, querying every minute while the wechat_sender service runs on the same host.

When a notification arrives—e.g., “阿绿 (wechat_sender) sent a message”—the author can quickly book the appointment.