Fix var naming in Python #158

Job	Run time
ubuntu-latest - Env all Release	43m 29s
ubuntu-latest - Env all Debug	44m 39s
ubuntu-latest - Env all-py39 Release	42m 35s
ubuntu-latest - Env all-py39 Debug	43m 30s
macos-latest - Env all Release	24m 37s
macos-latest - Env all Debug	20m 39s
macos-latest - Env all-py39 Release	27m 2s
macos-latest - Env all-py39 Debug	21m 27s
macos-13 - Env all Release	42m 22s
macos-13 - Env all Debug	37m 0s
macos-13 - Env all-py39 Release	44m 4s
macos-13 - Env all-py39 Debug	43m 15s
windows-latest - Env all Release	1h 16m 49s
windows-latest - Env all-clang-cl Release	36m 45s
check-macos-linux-windows-pixi	6s
	9h 8m 19s

Provide feedback