Java does shared memory by default and even has concurrency related concepts as fundamentals of the language (Object.wait(), etc.) . Python supports threading

Java does shared memory by default and even has concurrency related concepts as fundamentals of the language (Object.wait(), etc.) . Python supports threading but is not very useful due to the infamous GIL. However, multiprocessing is usually a decent alternative and it supports shared memory on forking (copy on write, though). Also you can use mmap easily for IPC.