How to Resolve \"ImportError: No module named \'_ctypes\'\" When Using Value from Multiprocessing in Python3?

Python3: Resolving "ImportError: No module named '_ctypes'" When Using Value from Multiprocessing

While attempting to assign a variable using Value from the multiprocessing module in Python3, users may encounter an "ImportError: No module named '_ctypes'" error. This issue commonly arises after updating Python to version 3.4.

One possible cause is an incomplete or incorrect Python update. Although Python 3.4 was installed in /usr/local/lib/python3.4, the previous version (3.3.2) remained installed in /usr/lib. To ensure a proper update, reinstall Python 3.4.

A second potential solution involves installing libffi-dev and re-installing Python 3.7. For RHEL/Fedora systems, use the following commands:

• sudo yum install libffi-devel
• sudo dnf install libffi-devel

For Debian/Ubuntu systems, use:

• sudo apt-get install libffi-dev

After successfully installing libffi-dev, re-install Python 3.7. These steps should resolve the "ImportError: No module named '_ctypes'" issue when using Value from the multiprocessing module.

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