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# A program which exits after starting a child which inherits its
# stdin/stdout/stderr and keeps them open until stdin is closed.
import os
import sys
def grandchild():
sys.stdout.write("grandchild started")
sys.stdout.flush()
sys.stdin.read()
def main():
if sys.argv[1] == "child":
if sys.argv[2] == "windows":
import win32api as api # type: ignore[import]
import win32process as proc # type: ignore[import]
info = proc.STARTUPINFO()
info.hStdInput = api.GetStdHandle(api.STD_INPUT_HANDLE)
info.hStdOutput = api.GetStdHandle(api.STD_OUTPUT_HANDLE)
info.hStdError = api.GetStdHandle(api.STD_ERROR_HANDLE)
python = sys.executable
scriptDir = os.path.dirname(__file__)
scriptName = os.path.basename(__file__)
proc.CreateProcess(
None,
" ".join((python, scriptName, "grandchild")),
None,
None,
1,
0,
os.environ,
scriptDir,
info,
)
else:
if os.fork() == 0:
grandchild()
else:
grandchild()
if __name__ == "__main__":
main()