Differences - Python & Jython

Python C Multi-platform Compiles to .pyc Extend with C GIL Python Garbage Collection

Jython 100% Java Any JVM (currently 1.1+) Compiles to .class Extend with Java Truly multi-threaded Java garbage collection

General Bits

• __del__ is not reliable because the Java garbage collector is used
• Java only has Unicode strings
• Cannot mix Python and Java classes in multiple inheritance
• Java instances cannot have dynamic attributes
• Boolean type difficult to address:
  public void do(int i);
  public void do(boolean b);

• Jython changes with two fronts:
  Keeping up with CPython language changes
  new-style classes
  list comprehensions
  generators
  Keeping up with Java language changes
  enum
  auto-boxing
  vargs
  generics (not necessary in Python)
  annotations
  StackTraceElement