How to Ensure Single Instance Execution of Python Programs Without Using Lock Files?

Ensuring Single Program Instance Execution

Question:

How can one ensure that only a single instance of a Python program is running concurrently? Approaches like using a lock file may be impractical due to potential program failures.

Answer:

A cross-platform and reliable solution is provided by the tendo library. Here's how to use it:

<code class="python">from tendo import singleton
me = singleton.SingleInstance() # Exits the program (-1) if another instance is running</code>

Installation:

1. Use easy_install: easy_install tendo
2. Use pip: pip install tendo
3. Manual installation: Download from pypi.python.org/pypi/tendo

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