Deephaven fork of jpy Bi-directional Python-Java bridge
This package is a fork of jpy https://github.com/bcdev/jpy.git maintained by Deephaven Data Labs.
- Note that "deephaven-jpy" is not compatible with "jpy" as they both install shared libraries with the same name.
- If you already have "jpy" installed, it should be removed before installing "deephaven-jpy"
# Remove jpy if it is currently installed pip uninstall jpy # Install deephaven-jpy pip install deephaven-jpy
>>> import jpy >>> ...
Version 0.10 (in development)
- Make jpy work with Anaconda by setting environment variable
PYTHONHOMEfrom Java #143. Contribution by Dr-Irv.
- Fixed: Constants are not properly passed from Java to Python when using interfaces #140. Contribution by Dr-Irv.
- Fixed: Cannot iterate through a dict in Python 3.x #136. Contribution by Dr-Irv.
This version includes a number of contributions from supportive GitHub users. Thanks to all of you!
- Corrected Java reference count of complex PyObject passed back and forth to methods (issue #120). Fix by sbarnoud.
- Fixed problem where default methods on Java 8 Interfaces were not found (issue #102). Fix by Charles P. Wright.
- Fixed error caused by missing
sys.argvin Python when called from Java (issue #81). Fix by Dave Voutila.
- Fixed problem where calling jpy.get_type() too many times causes a memory access error (issue #74). Fix by Dave Voutila.
- Fixed a corruption when retrieving long values (#72). Fix by chipkent.
- Fixed fatal error when stopping python session (issue #70, #77). Fix by Dave Voutila.
Explicit null checks for avoiding JVM crash (issue #126). Fix by Geomatys.
- Can now use pip to install Python
jpypackage directly from GitHub (#83). This works for Linux and OS X where C compilers are available by default and should work on Windows with Visual Studio 15 installed. Contribution by Dave Voutila.
PyObjectis now serializable. Contribution by Mario Briggs.
- Improved Varargs method matching. You may pass in either an array (as in the past) or individual Python arguments, the match for a varargs method call is the minimum match for each of the arguments. Zero length arrays (i.e. no arguments) are also permitted with a match value of 10.
jpy.type_translationsdictionary for callbacks when instantiating Python objects.
jpy.VerboseExceptionsenables full Java stack traces.
- More Python exceptions are translated to the corresponding Java type.
- Globals and locals are converted when executing code with PyLib, to allow variables to be used across statement invocation; and interrogated from Java.
- PyObject wrappers for dictionary, list, and introspection functions to tell you whether or not you can convert the object.
- Support for isAssignable checks when dealing with Python Strings and primitives, to allow
matches for argument types such as
- Java interface types don't include methods of extended interfaces (issue #64)
- Loading of jpy DLL fails for user-specific Python installations on Windows (issue #58)
- Java interface types didn't expose java.lang.Object methods (issue #57)
- Java 1-arg static method was confused with a zero-arg non-static method (issue #54)
- Python interpreter crash occurred when executing del statement on Java arrays (issue #52)
- Python extensions loaded from Java couldn't see Python symbols (Linux) (issue #38)
- It is now possible to use jpy Java API to work with multiple Python installations (issue #35). A tool called 'jpyutil.py' can be used to write configuration files that determine the required shared libraries for a given Python versions. A new Java system property 'jpy.config' is used to point to a desired configuration file.
- Simplified jpy installation (issue #15):
- removed need to add JVM path to PATH (Windows) / LD_LIBRARY_PATH (Unix) environment variable
- removed need to compile Java module using Maven
- removed need to specify JDK_HOME environment variable, if JAVA_HOME already points to a JDK
- Added 'jclass' attribute to Python type that wraps a Java class (issue #63) .
- Java API extensions
- new jpy.org.PyObject.executeCode() methods
- new jpy.org.PyModule.getBuiltins() method
- new jpy.org.PyModule.getMain() method
- new jpy.org.PyModule.extendSysPath() method
- Java API configuration changes:
- System property jpy.jpyLib:
- System property jpy.jdlLib:
- System property jpy.pythonLib:
- System property jpy.config:
- Loaded from
- Python API configuration changes:
- Loaded from
- Attribute java_home
- Attribute jvm_dll
- Loaded from
- Python API extensions
- new jpyutil module
- new jpyutil tool
usage: jpyutil.py [-h] [--out OUT] [--java_home JAVA_HOME] [--jvm_dll JVM_DLL]
- new jpyutil module
- Added basic support for Java Scripting Engine API (issue #53)
- Switched to Apache 2.0 license from version 0.8 and later (issue #60)
- Fixed bad pointer in C-code which caused unpredictable crashes (issue #43)
- Fixed a problem where jpy crashes with unicode arguments (issue #42)
- Fixed segmentation fault occurring occasionally during installation of jpy (issue #40)
- Improved Java exception messages on Python errors (issue #39)
- Fixed problem where a Java primitive array argument has occasionally not been initialised by a related Python buffer argument (issue #37)
- Added backward compatibility with Python 2.7 (issue #34).
- Added Java parameter annotation 'output' (issue #36). This is used to optimise passing Python buffer arguments where Java primitive arrays are expected.
- Removed debugging prints of the form "JNI_OnLoad: ..."
- Corrected documentation of jpy.array(type, init) function, which was said to be jpy.array(type, length)
- Removed console dumps that occurred when calling from Java proxies into Python
- Updated Java API documentation and added it to Sphinx doc folder (doc/_static/java-apidoc)
- Added new diagnostic F_ERR flag to Java class PyLib.Diag
- Java class PyLib is no longer instantiable
- Updated README and added MANIFEST.in after recognising that the jpy-0.7.zip distribution misses most of the required source files and learning what to do on this case.
- Initial version.
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