The Jython ProjectThis way we aim to enable scientific Python code to run on Jython. Since Java is
rather present in industry, while Python is more present in science, JyNI is an ...
Jython 2.7b2 brings us up to language level compatibility with the 2.7 version of
CPython. We have focused largely on CPython compatibility, and so this release
... Download - Current Docs - Chapter 9: Scripting With Jython - Release Notes
Chapter 15: Introduction to Pylons — Jython Book v1.0 documentationPylons greatest strength is that it takes a best-of-breed approach to constructing
... The SQL Server back-end was already built in a robust way for CPython, and ...
If using a template language more similar to the one in Django is better for your
web designers, then switch go Jinja2. If you don't really want to deal with ...
Chapter 9: Scripting With Jython — Jython Book v1.0 documentationWe'll start with a simple script that finds any files in your current directory that ... In
the second call, we list all files that contain the string 'se', so only ' search .py' is ...
Chapter 5: Input and Output — Jython Book v1.0 documentationMost basic applications allow for keyboard entry via a terminal or command line
... The raw_input function always returns content passed in as a string whereas
.... example is to provide you with a place to look for actual working file I/O code.
Chapter 13: Simple Web Applications — Jython Book v1.0 Servlets are a Java platform technology for building web - based applications.
They are a platform- and server-independent technology for serving content to
the ...
Differences between CPython and JythonCPython and Jython are two different implementations of the Python language.
While a Language Reference exists for the Python language, there are a number
...
Chapter 8: Modules and Packages for Code Reuse — Jython Book Modules are helpful for creating libraries that can be imported and used in
different .... Unlike Java , this form of import binds the left-most module name, so if
you ...
Chapter 10: Jython and Java Integration — Jython Book v1.0 Making use of Java from within Jython applications is about as seamless as
using external Jython modules within a Jython script. As you learned in Chapter 8
, ...
Issue 1313: KeyboardInterrupt does not catch ctrl - c - Jython trackerTestJython. java , ph4r05, 2012-02-25.16:07:58, workaround code, tiny Jython ... If
CTRL - C is entered at the python command prompt, a KeyboardInterrupt is ...
Chapter 11: Using Jython in an IDE — Jython Book v1.0 Eclipse has had a plug-in known as PyDev for a number of years, and this plug-in
provides rich support for developing and maintaining Python and Jython ...
The Netbeans IDE also provides rich support for development and maintenance
of Python and Jython applications. Please note that in this chapter we will refer ...
Chapter 14: Web Applications With Django — Jython Book v1.0 Django is a modern Python web framework that redefined web development in
the ... has a strong presence on the enterprise web space ) sounds even better.
Installing PyDev ¶. Eclipse doesn't include built-in Jython support. Thus, we will
use PyDev , an excellent plug-in which adds support for the Python language and
...
The entries of the directory on that path are returned as a list. ... The splitext
function takes a file name and returns a tuple of the base name ... directory
old_ext new_ext" % sys.argv[0] sys. exit (1) change_ext(sys.argv[1], sys.argv[2],
sys.argv[3]).
This chapter will focus on integrating Java and Python , but it will explore several
different angles on the topic. You will learn several techniques to make use ...
JVM Compatibility - JythonSince performance can also vary considerably across JVM implementations, this
... This is amoung the fastest of the JVM's for Windows, and it also the most ...
How to use Java from Jython?Using Java from Jython is as simple as importing the Java package that you'd like
to use . ... Learn to use JSR-223, and make your Jython callable from Java .
Chapter 10 : Jython and Java Integration — Jython Book v1.0 Table 10 -1 was taken from the Jython user guide. .... Java interface for a building
object package org.jython. book .interfaces; public interface BuildingType ...
Similarly, we can code web start applications using Jython instead of pure Java
.... Once you learn how to make use of JSP and Jython servlets you can explore ...
Chapter 19: Concurrency — Jython Book v1.0 documentationAgain, Jython does not have the straightjacket of the GIL . This is because all
Python threads are mapped to Java threads and use standard Java garbage ...
Function Syntax and Basics¶. Functions are .... But this mechanism won't work for
a list where we expect it is initialized to an empty list upon invocation. If you're ...
Applet Demos - JythonHere is the Java source code for the Jython loading display you see above. Once
the library has loaded, your first Jython applet will appear below: ...
ZipFile . writestr ("path", "content") doesn't work - Jython trackerZipFile . writestr ("path", "content") doesn't work. Try this example in Python , then in
Jython: import zipfile z = zipfile . ZipFile ("test.zip","w", zipfile .
Eclipse has had a plug-in known as PyDev for a number of years, and this plug-in
... In this context, an interpreter is just a particular installation of some ... But in our
experience, it's rarely needed to change most of the other options available.
Chapter 1: Language and Syntax — Jython Book v1.0 documentationLearning Jython not only allows you to run on the JVM, but it also ... the syntax so
that you will know the basics and learn the language as you move ...
userguide - JythonThis page has been retired for versions of Jython older than 2.2. Please see the
userguide wiki page for the current 2.5 version. If you want the archived web ...
So let's take a look at how you might find some files from a Jython program. We'll
start with a simple script that finds any files in your current directory that match a ...
29.4. keyword — Testing for Python keywords — Jython v2.5.2 Sequence containing all the keywords defined for the interpreter. If any keywords
are defined to only be active when particular __future__ statements are in ...
Also note that we will call the plug-ins discussed by their names, so in the case of
Netbeans the plug-in is called Netbeans Python Plug-in. This plug-in works ...
15.5. logging — Logging facility for Python — Jython v2.5.2 The following Python module creates a logger , handler, and formatter nearly ....
SysLogHandler instances send error messages to a Unix syslog daemon, ...
This works well for small examples , but when your program gets larger, .... If you
are not importing from a Java package , it is sometimes convenient to use this ...
2.5b1 breaks XML DocumentBuilderFactory (in particular, Weblogic newInstance( DocumentBuilderFactory .java:129) at weblogic .jsp.internal.jsp.
JspTagLibraryFeature.parseTldFromWebXML(JspTagLibraryFeature.java:879) .
It will give you a taste of using statements and expressions. As every ... If you do
not have Java 5 or greater then you'd better go and grab that from ...
Django is a modern Python web framework that redefined web development in
the ... And for the Java world, having Django as an option to quickly build web ...
5. Built-in Types — Jython v2.5.2 documentationLong integers have unlimited precision. Floating point numbers are implemented
using double in C. All bets on their precision are off unless you happen to know ...
But, without third-party libraries, you won? be able to connect to any database ,
because the built-in Django database backends depend on libraries written in C,
...
9.3. decimal — Decimal fixed point and floating point arithmetic The decimal module provides support for decimal floating point arithmetic. ... The
context for arithmetic is an environment specifying precision , rounding rules,
limits on exponents, flags ... Decimals interact well with much of the rest of Python
.
Chapter 7: Exception Handling and Debugging — Jython Book v1.0 In Java, many times the compiler forces you to catch exceptions , such is .... bit in
order to ready developers for Python 3 , which exclusively uses the new syntax.
Issue 1957: Windows only CTRL - C no longer works since Jython 2.5 Under Windows CTRL - C does not work and the only way to stop Jython is to kill
the JVM ( java .exe) in the TaskManager. Problem does not exist in 2.5.1.
Java Arrays in JythonMany Java methods require Java array objects as arguments. The way that these
arguments are used means that they must correspond to fixed-length, mutable ...
StringUtil (Jython API documentation)Each byte contains the low-order bits of its corresponding char. Parameters:
string - a String value; Returns: a byte array with one byte for each char in string ...
Java developers are very familiar with the try - catch -finally block as this is the
main mechanism that is used to perform exception handling. Python exception ...
9.4. random — Generate pseudo- random numbers — Jython v2.5.2 Almost all module functions depend on the basic function random (), which
generates a random float uniformly in the semi-open range [0.0, 1.0). Python
uses the ...
Encodes this String into a sequence of bytes. ... corresponding char. Parameters:
string - a String value; Returns: a byte array with one byte for each char in string ...
7.3. struct — Interpret strings as packed binary data — Jython v2.5.2 This module performs conversions between Python values and C structs
represented as Python strings. ... Unpack the string (presumably packed by pack (
fmt, .
We will also look at some alternative ways of creating functions in a later section.
..... Using global is rarely necessary in practice, since it is not necessary if the ...
At the time of this writing, applets in Jython 2.5.0 are not yet an available option.
..... for Google App Engine and deployed it in my local Glassfish environment.
There aren't that many web developers using Django on Windows , never mind
SQL Server. While the ... The best way to install Pylons isinside of a virtualenv.
In practice, however, scripts can become so large that the line between a script
and a full sized ... The entries of the directory on that path are returned as a list .
Jython User GuideYou can create an instance of a Java class exactly the way you would create an
instance of a Python class. ... The following table shows how Python objects are
coerced to Java objects when passed as ... boolean , Integer (true = 1, false = 0).
This module implements pseudo- random number generators for various
distributions. For integers ... Python uses the Mersenne Twister as the core
generator.
In this example, the function name is times2 and it accepts a parameter n. The
body of the function is only one line, but the work being done is the multiplication
...
Chapter 3: Operators , Expressions, and Program Flow — Jython Unary operators can be used to evaluate positive or negative numbers. ...
Comparison operators can be used for comparison of two or more expressions or
variables. ... above, these operators have no significant difference to that of Java .
Metric to English Conversion Applet - JythonA Metric to English Converter . This example shows how to put a number of
different gui components together to build a complete system. It does the
amazing ...
PyList (Jython API documentation)Get the backing array. int, hashCode() ... return smallest index where an element
in the list equals the argument. ... PyList. public PyList(PyType type, Collection c )
...
Design of CPython's Compiler — Jython Developer's GuidePython's parser is an LL(1) parser mostly based off of the implementation laid ...
_stmt { enum { FunctionDef_kind=1, Return_kind=2, Yield_kind= 3 } kind; ..... Skip
Montanaro presented a paper at a Python workshop on a peephole optimizer [1].
Chapter 18: Testing and Continuous Integration — Jython Book v1.0 Chapter 18: Testing and Continuous Integration ¶. Nowadays ... Let's start the
chapter with a discussion of the most common Python testing tools. We will start ...
24.2. doctest — Test interactive Python examples — Jython v2.5.2 ValueError: n must be >= 0 Factorials of floats are OK, but the float must be an
exact integer: ... python example.py -v Trying: factorial (5) Expecting: 120 ok
Trying: ...
Python Testing Tools¶. Let's start the chapter with a discussion of the most
common Python testing tools. ... math. ceil (0.5)) self.assertEqual(0, math. ceil (-0.5)
) self. ... assertAlmostEqual(0.3, 0.1 * 3 ) def testDivision(self): self.assertRaises(
ZeroDivisionError, operator. div , 1, 0) # The same assertion using a different idiom
: self.
Jython MonthlySince 2006, the Jython Monthly newsletter has been bringing you Jython ... The
Definitive Guide to Jython: Python for the Java Platform ... Groovy Magazine
18.13. binascii — Convert between binary and ASCII — Jython v2 The binascii module contains a number of methods to convert between binary
and various ASCII -encoded binary representations. Normally, you will not use ...
Let's try running our script with some random arguments: ... The entries of the
directory on that path are returned as a list . ..... Example Script : Builder .py¶.
zxJDBC - JythonThe most common way to establish a connection is through a Driver . ... from com.
ziclix. python . sql import zxJDBC >>> d, u, p, v = "jdbc:mysql://localhost/test", ...
Similarly, we can code web start applications using Jython instead of pure Java
to make our lives easier. Coding these applications in pure Java has proven ...
Issue 2113: Update /fix Intellij IDEA project files - Jython trackerMessages. msg8228 (view), Author: Santoso Wijaya (santa4nt), Date: 2014-01-
14.00:50:19. The project files for IDEA have some errors and missing ...
For CPython, the GIL means that only one thread at a time can run Python code.
... wait for the import" for i in xrange(10): print i time. sleep (0.1) print "Now join.
20.22. xmlrpclib — XML-RPC client access — Jython v2.5.2 Example of Client Usage; 20.22. 10 . Example ... XML-RPC is a Remote
Procedure Call method that uses XML passed via HTTP as a transport. With it, a
.... Signatures themselves are restricted to the top level parameters expected by a
method.
20.19. SimpleHTTPServer — Simple HTTP request handler ... - JythonThe SimpleHTTPServer module defines a single class,
SimpleHTTPRequestHandler, which is interface-compatible with
BaseHTTPServer.
15.3. optparse — More powerful command line option parser optparse is a more convenient, flexible, and powerful library for parsing
command - line options than the old getopt module. optparse uses a more
declarative ...
