#!/usr/bin/env python
import sys
import pty
import os

def get_text(filename):
    try:
        ( child_pid, fd ) = pty.fork()    # OK
    except OSError as e:
        print(str(e))
        sys.exit(1)

    if child_pid == 0:
        try:
            with open("log.txt", "w") as f:
                f.write("about to execlp")
            os.execlp("cat", "cat", filename)
        except:
            with open("log.txt", "w") as f:
                f.write("could not spawn process")
            print("Could not spawn")
            sys.exit(1)

    child_pty = os.fdopen(fd)
    return child_pty.read()


if __name__ == "__main__":
    print(get_text("my-pty-test.py"))