What are some common errors in Python multiprocessing?

What are some common errors I might encounter when using Python's multiprocessing module?

Some common errors include 'ValueError: too many values to unpack', 'RuntimeError: can't start new thread', and 'OSError: [Errno 12] Cannot allocate memory'.

Can you explain the 'ValueError: too many values to unpack' error?

This error occurs when you try to unpack more values than the number of variables you have. For example, if a function returns three values but you only provide two variables to receive them.

How can I avoid the 'RuntimeError: can't start new thread' error?

To avoid this error, ensure that your system has enough resources to create new threads. You can also limit the number of processes you spawn.

What should I do if I encounter an 'OSError: [Errno 12] Cannot allocate memory'?

This error indicates that your system is running out of memory. You can try closing other applications, optimizing your code, or increasing your system's memory.