Why Does psycopg2 Installation Fail with 'pg_config executable not found'?

Diagnosing "pg_config executable not found" Error During psycopg2 Installation

When attempting to install psycopg2 using pip, users may encounter the error "pg_config executable not found." Despite verifying that pg_config is present in the PATH, this issue can persist.

Resolving the Issue

This error typically arises due to missing or incorrect dependencies. The resolution involves installing the necessary package containing pg_config.

• Linux:

  • Install postgresql-devel using your package manager (e.g., yum install postgresql-devel for CentOS).

• Debian/Ubuntu:

  • Install libpq-dev using your package manager (e.g., apt-get install libpq-dev).

• Centos/Fedora/Cygwin/Babun:

  • Install libpq-devel using your package manager.

After installing the appropriate package, try reinstalling psycopg2 using pip. This should resolve the "pg_config executable not found" error.

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