Скачать или смотреть How to Resolve the pg_config executable not found Error When Using Pip on Windows

Learn how to fix the "pg_config executable not found" error when installing Python packages with pip on Windows.
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When working with Python and PostgreSQL on Windows, you might encounter the error message: pg_config executable not found while attempting to install certain libraries using pip. This error essentially means that the system is unable to locate the pg_config executable, which is required by PostgreSQL-dependent packages such as psycopg2.

Understanding the Issue

The root cause of this issue typically stems from the fact that PostgreSQL is either not installed or its pg_config path is not included in the system's environment variables. pg_config is a utility that comes with PostgreSQL and is crucial for compiling extensions that interact with PostgreSQL.

Steps to Resolve the Issue

Ensure PostgreSQL is Installed

First, ensure that PostgreSQL is installed on your system. You can download it from the official PostgreSQL website and follow the installation instructions.

Locate pg_config

After PostgreSQL is installed, locate the pg_config executable. It is usually found in the bin directory of your PostgreSQL installation. The common path for the executable may look something like this:

[[See Video to Reveal this Text or Code Snippet]]

Replace XX with your version of PostgreSQL.

Add pg_config to System PATH

Next, add the directory where pg_config.exe resides to your system's PATH environment variable. Here's how you can do it:

Right-click on Computer or This PC on your desktop or in File Explorer.

Select Properties.

Click on Advanced system settings.

In the System Properties window, click the Environment Variables button.

In the Environment Variables window, find the Path variable in the System variables section and select it.

Click Edit and add the path to the PostgreSQL bin directory (e.g., C:\Program Files\PostgreSQL\XX\bin).

Click OK to save and exit all dialogs.

Restart Your Command Prompt

Open a new command prompt window to make sure the new environment variables are loaded.

Install the Required Package

With pg_config now accessible, retry your pip command:

[[See Video to Reveal this Text or Code Snippet]]

Replace package_name with the name of the package you were trying to install.

Conclusion

By following these steps, you should be able to resolve the pg_config executable not found error, allowing you to successfully install PostgreSQL-dependent Python packages using pip on Windows. Keeping your system's PATH updated and ensuring that necessary executables are accessible is key to preventing similar issues in the future.

If you encounter further issues or need more specific help, consulting the package’s documentation or reaching out to its support community can also provide tailored guidance.