Procedure for installing python libraries from source

Hi,
I tried to follow these instructions and I got the following error when I ran “jython -m ensurepip” to install pip and setuptools:

Exception in thread “main” java.lang.UnsatisfiedLinkError: Could not load library. Reasons: [no jansi in java.library.path, The system cannot find the path specified]
at org.fusesource.hawtjni.runtime.Library.doLoad(Library.java:182)
at org.fusesource.hawtjni.runtime.Library.load(Library.java:140)
at org.fusesource.jansi.internal.CLibrary.(CLibrary.java:42)
at org.fusesource.jansi.AnsiConsole.wrapOutputStream(AnsiConsole.java:48)
at org.fusesource.jansi.AnsiConsole.(AnsiConsole.java:38)
at org.python.jline.AnsiWindowsTerminal.detectAnsiSupport(AnsiWindowsTerminal.java:57)
at org.python.jline.AnsiWindowsTerminal.(AnsiWindowsTerminal.java:27)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.python.jline.TerminalFactory.getFlavor(TerminalFactory.java:211)
at org.python.jline.TerminalFactory.create(TerminalFactory.java:102)
at org.python.jline.TerminalFactory.get(TerminalFactory.java:186)
at org.python.jline.TerminalFactory.get(TerminalFactory.java:192)
at org.python.jline.console.ConsoleReader.(ConsoleReader.java:243)
at org.python.util.JLineConsole.install(JLineConsole.java:107)
at org.python.core.Py.installConsole(Py.java:1744)
at org.python.core.PySystemState.initConsole(PySystemState.java:1269)
at org.python.core.PySystemState.doInitialize(PySystemState.java:1119)
at org.python.core.PySystemState.initialize(PySystemState.java:1033)
at org.python.core.PySystemState.initialize(PySystemState.java:989)
at org.python.core.PySystemState.initialize(PySystemState.java:984)
at org.python.util.jython.run(jython.java:263)
at org.python.util.jython.main(jython.java:142)

Any help would be appreciated.