py -3 command unrecognized when building makedata project on Windows 10 x64 Debug

Description

I am building icu4c 67.1 from source with the allinone VS solution on Windows 10 (Visual Studio 2019 Community) targeting x64 in Debug. All projects build successfully except for makedata, which fails to build with errors py exited with code 0x1 and The command "NMAKE /f makedata.mak ICUMAKE="C:\icu\icu4c\source\data\\" CFG=x64\Debug" exited with code 2. Simply replacing all occurrences of py -3 in the makedata project with python fixed the issue and the project built successfully. All tests subsequently passed.

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Reporter

Tyler Payne

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