Web Reference: Feb 6, 2026 · Sometimes you need a file just for a short time. This is where temporary files come in. Python's tempfile module makes this easy. It helps you create and manage temporary files and directories safely. This guide will show you how to use it. You will learn to create, write to, and clean up temp files properly. Feb 6, 2016 · If you see Python's documentation, it clearly mentions that os.rename () is an atomic operation. So in your case, writing data to a temporary file and then renaming it to the original file would be quite safe. You can safely create a file in Python if and only if it does not exist by using the os.path.exists function to check if the file already exists and then creating it if it doesn't exist. Here's an example:
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