Class jython

java.lang.Object
org.python.util.jython

public class jython extends Object
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    The default format for console log messages in the command-line Jython.
    static final Logger
    The root of the Jython Logger hierarchy, named "org.python".
  • Constructor Summary

    Constructors
    Constructor
    Description
     
  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    main(String[] args)
    Main Jython program, following the structure and logic of CPython main.c to produce the same behaviour.
    static void
    run(String[] args)
    Deprecated.
    static int
    runJar(String filename)
    Runs a JAR file, by executing the code found in the file __run__.py, which should be in the root of the JAR archive.

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • logger

      public static final Logger logger
      The root of the Jython Logger hierarchy, named "org.python".
    • CONSOLE_LOG_FORMAT

      public static final String CONSOLE_LOG_FORMAT
      The default format for console log messages in the command-line Jython. See java.util.logging.SimpleFormatter for an explanation of the syntax.

      This format is used in the absence of other logging preferences. Jython tests for definitions in the system properties of java.util.logging.config.class, java.util.logging.config.file, and java.util.logging.SimpleFormatter.format and if none of these is defined, it sets the last of them to this value.

      You can choose something else, for example to log with millisecond time stamps, launch Jython as:

       jython -vv -J-Djava.util.logging.SimpleFormatter.format="[%1$tT.%1$tL] %3$s: (%4$s) %5$s%n"
       
      Depending on your shell, the argument may need quoting or escaping.
      See Also:
  • Constructor Details

    • jython

      public jython()
  • Method Details

    • runJar

      public static int runJar(String filename)
      Runs a JAR file, by executing the code found in the file __run__.py, which should be in the root of the JAR archive. Note that __name__ is set to the base name of the JAR file and not to "__main__" (for historical reasons). This method does not handle exceptions. the caller should handle any (Py)Exceptions thrown by the code.
      Parameters:
      filename - The path to the filename to run.
      Returns:
      0 on normal termination (otherwise throws PyException).
    • run

      @Deprecated public static void run(String[] args)
      Deprecated.
      Now equivalent to main(String[]), which is to be preferred.
    • main

      public static void main(String[] args)
      Main Jython program, following the structure and logic of CPython main.c to produce the same behaviour. The argument to the method is the argument list supplied after the class name in the java command. Arguments up to the executable script name are options for Jython; arguments after the executable script are supplied in sys.argv. "Executable script" here means a Python source file name, a module name (following the -m option), a literal command (following the -c option), or a JAR file name (following the -jar option). As a special case of the file name, "-" is allowed, meaning take the script from standard input.

      The main difference for the caller stems from a difference between C and Java: in C, the argument list (argv) begins with the program name, while in Java all elements of (args) are arguments to the program.

      Parameters:
      args - arguments to the program.