Hi,
I'm trying to port a program from .NET/windows to Mono/linux, but I'm
running into some trouble with the System.Diagnostics.Process class. The
program uses the Process class to invoke a python script, send data to its
stdin, and read data back from its stdout. The mechanism is shown in the
following code:
class Program
{
static void Main(string[] args)
{
var startInfo = new ProcessStartInfo("python");
startInfo.Arguments = "./hello.py";
startInfo.UseShellExecute = false;
startInfo.RedirectStandardInput = true;
startInfo.RedirectStandardOutput = true;
var p = Process.Start(startInfo);
if (p.HasExited) // verify it actually started
return;
var names = new[] { "Bobby", "Billy", "Jenny", "June" };
foreach (var name in names)
{
p.StandardInput.WriteLine(name);
var result = p.StandardOutput.ReadLine();
Console.WriteLine("Result: {0}", result);
}
p.Kill();
}
}
and the python script is this:
#!/usr/bin/python
line = raw_input()
while len(line) > 0:
print("Hello " + line)
line = raw_input()
This all works fine on .NET/Windows but on Mono/Linux it hangs on the call
to p.StandardOutput.ReadLine(). Any idea what's going on here? I don't have
much experience with Linux.
ps. I also tried changing the python script to use sys.stdin and sys.stdout
instead of raw_input and print, but this made no difference.
--
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