Issues

• PyPI metadata has no Source link: project_urls was only added to the root setup.py

  py4j/py4j#599 · Filter by author cemrehancavdar opened on Oct 9, 2026

• When is support for Python 3.13 planned?

  py4j/py4j#574 · Filter by author appleman4000 opened on Jan 27, 2026

• Java ClientServer ignores javaAddress and starts on 127.0.0.1 localhost instead

  py4j/py4j#571 · Filter by author PaperTsar opened on Oct 10, 2025

• Socket Connection Not Working from Java Swing Application

  py4j/py4j#567 · Filter by author BenjaminETaylor opened on Jun 2, 2025

• Incomplete handling of Java Interfaces for Python callers

  py4j/py4j#565 · Filter by author scottslewis opened on May 22, 2025

• Potential Security Enhancements for Py4J

  py4j/py4j#561 · Filter by author liu1234fan opened on May 8, 2025
  2

• ValueError: filedescriptor out of range in select()

  py4j/py4j#559 · Filter by author ghost opened on Apr 30, 2025
  1

• What is the purpose of the javaAddress parameter?

  py4j/py4j#558 · Filter by author liugddx opened on Apr 9, 2025

• Clarification on Single-Threading Model

  py4j/py4j#550 · Filter by author snj07 opened on Dec 16, 2024
  6

• py4j.protocol.Py4JError: Could not find py4j jar at

  py4j/py4j#547 · Filter by author csun-cpointe opened on Oct 29, 2024

• An unexpected error occurred: An exception was raised by the Python Proxy. Return Message: Object ID unknown

  py4j/py4j#546 · Filter by author lihison opened on Oct 25, 2024
  3

• install on linux error:py4j-python/py4j-java/py4j0.10.9.7.jar doesn't exit

  py4j/py4j#545 · Filter by author wiktor-233-gp opened on Aug 2, 2024
  1

• Implementing in streamlit with custom java functions -

  py4j/py4j#534 · Filter by author wyuill opened on Dec 29, 2023

• py4j.Py4JNetworkException: java.net.BindException: Permission denied

  py4j/py4j#532 · Filter by author luoyi94 opened on Nov 9, 2023
  1

• Getting TypeError: 'NoneType' object is not callable in java_gateway.py

  py4j/py4j#531 · Filter by author kareemamrr opened on Oct 19, 2023

• Multithreading error

  py4j/py4j#530 · Filter by author APT64 opened on Aug 31, 2023
  1

• java.lang.NegativeArraySizeException: -63465312 at py4j.Base64.decode(Base64.java:321)

  py4j/py4j#529 · Filter by author siddhsql opened on Aug 30, 2023

• Cannot access to root cause of Py4JNetworkError Exception.

  py4j/py4j#528 · Filter by author MahsaSeifikar opened on Jul 20, 2023

• All PY4J 'sendCommand' blocked on JDK's createSocket default configuration

  py4j/py4j#525 · Filter by author Leniox opened on Jul 13, 2023

• Multithreaded python calls to java return deranged results

  py4j/py4j#523 · Filter by author sagewanglun opened on Jun 8, 2023
  5

• Could not find py4j jar when installed with pip install on Windows

  py4j/py4j#521 · Filter by author adoebber opened on Jun 7, 2023

• An error occurred while trying to connect to the Java server (127.0.0.1:25333)

  py4j/py4j#520 · Filter by author lakshmiravalir opened on Jun 4, 2023
  1

• What's the right way to convert Java collections to native Python collections?

  py4j/py4j#518 · Filter by author naddeoa opened on Apr 27, 2023
  2

• Stub generator

  py4j/py4j#514 · Filter by author timwoocker opened on Mar 18, 2023
  3

• Convert Python dict to Map from python_server_entry_point

  py4j/py4j#513 · Filter by author texervn opened on Mar 10, 2023
  2