py: fix dtype check in simple interface (#559) #325

Job	Run time
prepare	10s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=native)	1m 5s
Build with Pip (ubuntu-22.04, 3.8, llvm, -march=x86-64)	1m 10s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=native)	1m 14s
Build with Pip (ubuntu-22.04, 3.8, gcc, -march=x86-64)	51s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=native)	1m 7s
Build with Pip (ubuntu-22.04, 3.11, llvm, -march=x86-64)	1m 10s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=native)	52s
Build with Pip (ubuntu-22.04, 3.11, gcc, -march=x86-64)	1m 51s
Build with Pip (windows-2022, 3.8, msvc, /arch:AVX2)	10m 43s
Build with Pip (windows-2022, 3.8, msvc, /arch:SSE2)	12m 28s
Build with Pip (windows-2022, 3.8, llvm, /arch:AVX2)	4m 37s
Build with Pip (windows-2022, 3.8, llvm, /arch:SSE2)	4m 42s
Build with Pip (windows-2022, 3.11, msvc, /arch:AVX2)	11m 21s
Build with Pip (windows-2022, 3.11, msvc, /arch:SSE2)	11m 58s
Build with Pip (windows-2022, 3.11, llvm, /arch:AVX2)	3m 50s
Build with Pip (windows-2022, 3.11, llvm, /arch:SSE2)	3m 57s
Build with Pip (macos-13, 3.8, llvm, -march=native)	2m 59s
Build with Pip (macos-13, 3.8, llvm, -march=x86-64)	4m 9s
Build with Pip (macos-13, 3.8, gcc-14, -march=native)	1m 45s
Build with Pip (macos-13, 3.8, gcc-14, -march=x86-64)	1m 41s
Build with Pip (macos-13, 3.11, llvm, -march=native)	4m 41s
Build with Pip (macos-13, 3.11, llvm, -march=x86-64)	2m 39s
Build with Pip (macos-13, 3.11, gcc-14, -march=native)	1m 31s
Build with Pip (macos-13, 3.11, gcc-14, -march=x86-64)	1m 32s
	1h 34m 3s

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