run.py script containing only the '#! python3' shabang line.
Test performed in the Windows command prompt.
Environment as described in the Python issue report.

Python traceback:
> D:\Workplace>run.py
> Fatal Python error: Py_Initialize: can't initialize sys standard streams
> Traceback (most recent call last):
>   File "C:\Program Files\Python\Python333\lib\io.py", line 52, in <module>
>     import abc
>   File "C:\Program Files\Python\Python333\lib\abc.py", line 6, in <module>
>     from _weakrefset import WeakSet
>   File "<frozen importlib._bootstrap>", line 1604, in _handle_fromlist
> KeyboardInterrupt

Visual studio reports the process as having only 2 threads.

C traceback for thread named 'Main Thread':
>	msvcr100.dll!__crt_debugger_hook() 	
> 	msvcr100.dll!_call_reportfault()  + 0x124 bytes	
> 	msvcr100.dll!abort()  + 0x35 bytes	
> 	python33.dll!Py_FatalError(const char * msg=0x0000000001efa4d0)  Line 2379	C
> 	python33.dll!_Py_InitializeEx_Private(int install_sigs=1, int install_importlib=0)  Line 389	C
> 	python33.dll!Py_Main(int argc=0, unsigned short * * argv=0x0000034400000000)  Line 652	C
> 	python.exe!__tmainCRTStartup()  Line 552 + 0x19 bytes	C
> 	kernel32.dll!BaseThreadInitThunk()  + 0xd bytes	
> 	ntdll.dll!RtlUserThreadStart()  + 0x21 bytes	

C traceback for thread named 'TppWaiterpThread':
>	ntdll.dll!ZwWaitForMultipleObjects()  + 0xa bytes	
> 	ntdll.dll!TppWaiterpThread()  + 0x147 bytes	
> 	kernel32.dll!BaseThreadInitThunk()  + 0xd bytes	
> 	ntdll.dll!RtlUserThreadStart()  + 0x21 bytes	

Complete Visual Studio debug output:
> 'python.exe': Loaded 'C:\Program Files\Python\Python333\python.exe', Symbols loaded.
> 'python.exe': Loaded 'C:\Windows\System32\ntdll.dll', Symbols loaded (source information stripped).
> 'python.exe': Loaded 'C:\Windows\System32\kernel32.dll', Symbols loaded (source information stripped).
> 'python.exe': Loaded 'C:\Windows\System32\KernelBase.dll'
> 'python.exe': Loaded 'C:\Program Files\Python\Python333\python33.dll', Symbols loaded.
> 'python.exe': Loaded 'C:\Windows\System32\user32.dll'
> 'python.exe': Loaded 'C:\Windows\System32\gdi32.dll'
> 'python.exe': Loaded 'C:\Windows\System32\lpk.dll'
> 'python.exe': Loaded 'C:\Windows\System32\usp10.dll'
> 'python.exe': Loaded 'C:\Windows\System32\msvcrt.dll'
> 'python.exe': Loaded 'C:\Windows\System32\advapi32.dll'
> 'python.exe': Loaded 'C:\Windows\System32\sechost.dll'
> 'python.exe': Loaded 'C:\Windows\System32\rpcrt4.dll'
> 'python.exe': Loaded 'C:\Windows\System32\shell32.dll'
> 'python.exe': Loaded 'C:\Windows\System32\shlwapi.dll'
> 'python.exe': Loaded 'C:\Program Files\Python\Python333\msvcr100.dll', Symbols loaded (source information stripped).
> 'python.exe': Loaded 'C:\Windows\System32\imm32.dll'
> 'python.exe': Loaded 'C:\Windows\System32\msctf.dll'
> 'python.exe': Loaded 'C:\Windows\System32\nvinitx.dll'
> 'python.exe': Loaded 'C:\Windows\System32\cryptsp.dll'
> 'python.exe': Loaded 'C:\Windows\System32\rsaenh.dll'
> 'python.exe': Loaded 'C:\Windows\System32\cryptbase.dll'
> The thread 'Win64 Thread' (0x2aa8) has exited with code 0 (0x0).
> Microsoft Visual Studio C Runtime Library has detected a fatal error in python.exe.
> 
> Press Break to debug the program or Continue to terminate the program.