How to Resolve ImportError: \'_ctypes\' Module Missing in Multiprocessing\'s Value Function?

Python3: ImportError: Resolving Missing '_ctypes' Module When Using Value from Multiprocessing

The issue stems from an incomplete Python installation. To resolve the "ImportError: No module named '_ctypes'" when using the Value function from the multiprocessing module, follow these steps:

1. Install libffi-dev:

This library provides the necessary headers for compiling the Python extension modules.

Debian/Ubuntu:

sudo apt-get install libffi-dev

RHEL/Fedora:

sudo yum install libffi-devel

2. Reinstall Python 3.4:

To ensure a complete and functional installation, remove any existing version of Python 3.4 and then reinstall it.

sudo apt-get remove python3.4
sudo apt-get install python3.4

Note: If your Python 3.4 installation is located in /usr/local/lib/python3.4, create a symbolic link to the system Python directory:

sudo ln -s /usr/local/lib/python3.4 /usr/lib/python3.4

After completing these steps, the '_ctypes' module will be available, and you should be able to successfully use the Value function from the multiprocessing module.

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