Python: Fix access to globals when there's more than one #16018

Job	Run time
python_test (ubuntu-22.04)	1m 24s
python_test (macos-12)	1m 32s
python_test (windows-2022)	3m 20s
cpp_test_driver (ubuntu-22.04)	6m 30s
cpp_test_driver (macos-12)	6m 42s
build_and_test (ubuntu-22.04, 1.73)	13m 6s
ffi_32bit_build	58s
build_and_test (macos-12, stable)	17m 48s
cpp_cmake (macos-12, 1.73)	13m 56s
build_and_test (windows-2022, stable)	21m 2s
cpp_cmake (windows-2022, nightly)	9m 3s
build_and_test (windows-2022, 1.73)	20m 31s
mcu (pico-st7789, thumbv6m-none-eabi)	37s
cpp_test_driver (windows-2022)	7m 40s
cpp_cmake (ubuntu-22.04, stable)	6m 35s
build_and_test (windows-2022, beta, --exclude ffmpeg --exclude gstreamer-player)	20m 5s
mcu (stm32h735g, thumbv7em-none-eabihf)	37s
build_and_test (ubuntu-22.04, nightly)	9m 41s
mcu_esp	2m 42s
node_test (ubuntu-22.04)	2m 54s
node_test (macos-12)	5m 8s
android	2m 21s
esp-idf-quick	9m 0s
node_test (windows-2022)	5m 23s
fmt_test	1m 43s
miri	40s
updater_test (0.3.0)	1m 41s
docs / docs	7m 18s
tree-sitter / tree-sitter-tests	9s
wasm / wasm	3m 53s
wasm_demo / wasm_demo	1m 23s
wasm / build-slintpad	45s
wasm / lint-slintpad	29s
cpp_package_test	2m 46s
	3h 29m 22s

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