for i in range(10000):
    print i

$ jython a_jython_script.py &
[1] 12325
 $

[1]+  Stopped                 jython a_jython_script.py

$ /Library/Java/JavaVirtualMachines/jdk1.8.0_212.jdk/Contents/Home/bin/java -Xmx512m -Xss2560k -classpath ../../../../../../usr/local/Cellar/jython/2.7.1/libexec/jython.jar:. -Dpython.home=../../../../../../usr/local/Cellar/jython/2.7.1/libexec -Dpython.executable=../../../../../../usr/local/Cellar/jython/2.7.1/libexec/bin/jython -Dpython.launcher.uname=darwin -Dpython.launcher.tty=true -Dfile.encoding=UTF-8 org.python.util.jython a_jython_script.py &
[1] 12623
 $

[1]+  Stopped                 /Library/Java/JavaVirtualMachines/jdk1.8.0_212.jdk/Contents/Home/bin/java -Xmx512m -Xss2560k -classpath ../../../../../../usr/local/Cellar/jython/2.7.1/libexec/jython.jar:. -Dpython.home=../../../../../../usr/local/Cellar/jython/2.7.1/libexec -Dpython.executable=../../../../../../usr/local/Cellar/jython/2.7.1/libexec/bin/jython -Dpython.launcher.uname=darwin -Dpython.launcher.tty=true -Dfile.encoding=UTF-8 org.python.util.jython a_jython_script.py
 $