The original title is "Another Tale of Two Threads (C or C++ vs. Python)"

Short summary

Python's main thread implicitly waits for all non-daemon threads to complete before the process terminates, whereas C/C++ exits immediately when main() returns—even if other threads are running. This key difference (shared with Java; Go and Rust follow C/C++) makes threading simpler in Python but is critical for C/C++ developers migrating code. Developers unaware of this behavior risk unexpected process termination and subtle concurrency bugs.

• •Python main thread implicitly joins all non-daemon threads; C/C++ terminates immediately regardless
• •Java follows Python's model; Go and Rust follow C/C++'s model
• •Critical understanding gap for C/C++ developers transitioning to Python threading

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