Why does it give an error when installing simple-crypt?

Question

Python

C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX86\x86\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Isrc/ -Isrc/inc-msvc/ -Ic:\users\▒▒▒▒▒▒\appdata\local\programs\python\python37-32\include -Ic:\users\▒▒▒▒▒▒\appdata \local\programs\python\python37-32\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\ATLMFC\include" "-IC:\ Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um" "- IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt""-IC:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt" /Tcsrc/winrand.c /Fobuild\temp.win32-3.7\Release\src/winrand.obj
winrand.c
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(27): error C2061: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒䨪▒▒▒ "intmax_t"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(28): error C2061: ᨭ⠪▒▒᪠▒ ▒訡▒▒ : ▒▒▒▒▒䨪▒▒▒ "rem"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(28): error C2059: ᨭ⠪▒▒᪠ ▒ ▒訡▒▒: ;
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(29): error C2059: ᨭ⠪▒▒᪠▒ ▒訡▒▒: }
C:\Program Files ( x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(31): error C2061: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒䨪▒▒▒ "imaxdiv_t"
C :\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(31): error C2059: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ;
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(41): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨ ▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(42): error C2146: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ ")" ▒▒। ▒▒▒▒▒䨪▒▒஬ "_Number"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(42): error C2061: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒䨪▒▒▒ "_Number"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(42): error C2059: ᨭ ⠪▒▒᪠▒ ▒訡▒▒: ;
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(43): error C2059: ᨭ⠪▒▒᪠▒ ▒訡▒▒: )
C:\Program Files ( x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(46): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(47): error C2146: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨ ▒ ")" ▒▒। ▒▒▒▒▒䨪▒▒஬ "_Numerator"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(47): error C2061: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒䨪▒▒▒ "_Numerator"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(47): error C2059: ᨭ ⠪▒▒᪠▒ ▒訡▒▒: ;
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(47): error C2059: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ,
C:\Program Files ( x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(49): error C2059: ᨭ⠪▒▒᪠▒ ▒訡▒▒: )
C:\Program Files (x86)\Windows Kits\ 10\include\10.0.17763.0\ucrt\inttypes.h(51): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(57): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨ ▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(64): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(70): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(77): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(83): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(90): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒▒▒⢨ ▒ "{" ▒▒। "__cdecl"
C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt\inttypes.h(96): error C2143: ᨭ⠪▒▒᪠▒ ▒訡▒▒: ▒▒▒▒ ▒▒⢨▒ "{" ▒▒। "__cdecl"
error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86 \\cl.exe' failed with exit status 2
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Command "c:\users\▒▒▒▒▒▒\appdata\local\programs\python\python37-32\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\843E ~1\\AppData\\Local\\Temp\\pip-install-u10jlqht\\pycrypto\\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read( ).replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\843E~1\ AppData\Local\Temp\pip-record-qhprfwpf\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\843E~1\AppData\Local\Temp \pip-install-u10jlqht\pycrypto\
What's the problem? numpy installs fine

Answer 1

In pypi, where the library is located, there is an answer to your question:
Dependency on pycrypto, which in turn is no longer officially supported ( https://github.com/dlitz/pycrypto/issues/173)