Im launching a simple python script and trying to ...

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[ec]

Im launching a simple python script and trying to read its output like this

val pp = Path.of(System.getProperty("user.dir"),"test.py")
        val p = ProcessBuilder("python3", pp.toString())
        p.redirectErrorStream(true)
        val pr = p.start()
        pr.outputStream.close()
        while (true) {

            if (pr.inputStream.available() < 1)
                Thread.sleep(10)
            else {
                val content = pr.inputStream.bufferedReader().use(BufferedReader::readText)
                println(content)
            }
        }

Python script:

import time
print("ABC")

i = 0
while True:
    print("ABC")
    i += 1
    time.sleep(1)

But nothing gets printed to screen. (Unless I remove the while part, then it actually prints "ABC" so python path, script path is correct) What is the correct way to do this?

[Shawn]

won’t it just block on waiting for the python process to return

[ec]

it actually runs on some other thread created by ExecutorService

[ec]

I've also tried print("ABC", flush=True) no luck.

[ec]

It works now with the readLine