[issue29336] merge tuples in module

[STINNER Victor]

STINNER Victor added the comment:

I don't know what is the most efficient technic to reduce the memory usage of module, but at least I can say imports are the top #1 memory consumer. Look at tracemalloc examples:

https://docs.python.org/dev/library/tracemalloc.html#display-the-top-10

"We can see that Python loaded 4855 KiB data (bytecode and constants) from modules"

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