Message10001

> ensurepip is run by default when you install Jython 2.7.0 with the installer.

Good to know, thanks for the info.

Unfortunately it seems that `umask` is still unavailable on OSX (10.10.3) for me:

Jython 2.7.0 (default:9987c746f838, Apr 29 2015, 02:25:11)
[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.8.0_40
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.umask
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'umask'

However, on Ubuntu trusty 64 bit:

Jython 2.7.0 (default:9987c746f838, Apr 29 2015, 02:25:11)
[OpenJDK 64-Bit Server VM (Oracle Corporation)] on java1.7.0_79
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.umask
<java function umask 0x2>

I installed from https://repo1.maven.org/maven2/org/python/jython-installer/2.7.0/jython-installer-2.7.0.jar
as follows:

$ java -jar jython-installer-2.7.0.jar -s -d jython
Performing silent installation
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Generating start scripts ...
Installing pip and setuptools
 90 %
java.io.IOException: Cannot run program "jython/bin/jython" (in directory "jython/bin"): error=20, Not a directory
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
    at org.python.util.install.ChildProcess.run(ChildProcess.java:272)
    at org.python.util.install.JarInstaller.ensurepip(JarInstaller.java:187)
    at org.python.util.install.JarInstaller.inflate(JarInstaller.java:152)
    at org.python.util.install.ConsoleInstaller.install(ConsoleInstaller.java:66)
    at org.python.util.install.Installation.internalMain(Installation.java:389)
    at org.python.util.install.Installation.main(Installation.java:43)
Caused by: java.io.IOException: error=20, Not a directory
    at java.lang.UNIXProcess.forkAndExec(Native Method)
    at java.lang.UNIXProcess.<init>(UNIXProcess.java:248)
    at java.lang.ProcessImpl.start(ProcessImpl.java:134)
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
    ... 6 more
 100 %
Congratulations! You successfully installed Jython 2.7.0 to directory /Users/josh/jython.