


How Can I Implement Cron-Like Scheduling in Python Without External Dependencies?
Finding the Perfect Cron-Like Scheduler in Python
Implementing scheduled tasks without relying on external cron installations can be a challenge. This article explores the options available to achieve this in Python.
Introducing Schedule
For pure Python solutions, the "schedule" library stands out. It provides an intuitive syntax for defining cron-like expressions. Here's an example:
import schedule import time def job(): print("I'm working...") schedule.every(10).minutes.do(job) # Every 10 minutes schedule.every().hour.do(job) # Every hour schedule.every().day.at("10:30").do(job) # At 10:30 AM every day while 1: schedule.run_pending() time.sleep(1)
Flexibility and Customization
Schedule offers the flexibility of cron expressions, allowing you to create complex schedules. It supports various time units such as minutes, hours, days, and weeks.
Running Python Functions as Jobs
Note that while schedule cannot launch external processes, it can handle Python functions as jobs. This allows you to schedule tasks running within your Python program.
Conclusion
For those seeking a lightweight and portable cron alternative in Python, the "schedule" library is an ideal solution. It provides the expressivity and flexibility needed for creating scheduled tasks.
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