As these variables are not needed for Python to run, they are not set for most installations. Understanding the Pythonpath Environment VariableĪn environment variable that lets you add additional directories where Python looks for packages and modules. And it is typically set by the Python installation program, but can be overridden by the user. If it doesn't find an entry there, it will search for Pythonpath in each parent folder until it finds one or creates one, if necessary. When you launch the Python interpreter, it looks for Pythonpath inside your current working directory. Or if Pythonpath is set to a list of directories, Python will search for modules and files in each of those directories.

If Pythonpath is set to a single directory, Python will search for modules and files in that directory only.

Pythonpath can be either a single directory or a list of directories separated by colons (:). This can be useful if you want to access different pieces of functionality from within your script without having to type out the full path every time. Pythonpath environment variable in Python allows you to include paths to other Python files in your scripts and Python's import mechanism to determine where to search for modules and files that use it. It is similar to the PATH environment variable in other languages, such as C and Java, but has additional directories for Python modules. Pythonpath is a special environment variable that provides guidance to the Python interpreter about where to find various libraries and applications.

What Is the PYTHONPATH Environment Variable in Python? It is available to all programs running in the same environment. PYTHONPATH is one such environment variable that is, it is a key-value pair stored in a computer's memory. Environment variables influence the behavior of Python.

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