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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 sys, os
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, win32process as proc
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()
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