How to Check if a File Exists in Python

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A tutorial on how to find out whether a file (or directory) exists using Python built-ins and functions from the standard library.

The ability to check whether a file exists on disk or not is important for many types of Python programs:

Maybe you want to make sure a data file is available before you try to load it, or maybe you want to prevent overwriting an existing file. The same is true for directories—maybe you need to…

A historical timeline of Codango™

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