Pyro5

What it is and what it does

Pyro5 is a pure-Python library that lets you build distributed applications where objects communicate over a network using normal Python method calls. Instead of writing custom network code, you expose Python objects and call methods on them remotely as if they were local—Pyro handles locating the object, serializing arguments, transmitting the call, and returning results. It supports multiple serializers (serpent, json, marshal, msgpack), secure SSL/TLS connections, IPv4/IPv6 and Unix domain sockets, and includes a name server for tracking object locations.

The library is designed for ease of use while offering advanced features like automatic reconnection, remote iterators, batched invocations, one-way calls, and correlation IDs for tracing. It has a stable foundation built on over 20 years of Pyro history and runs on CPython 3 and PyPy 3 across different platforms and architectures. The project is currently in low maintenance mode, meaning new features are unlikely but reported bugs are addressed.

Use it for

• Build a distributed system where computational tasks run on remote servers and are invoked from a central coordinator using normal Python method syntax.
• Create a multi-machine application where objects on different hosts need to communicate transparently without explicit socket or RPC boilerplate.
• Implement inter-process communication between Python processes on the same machine or across a network using a name server for dynamic object discovery.
• Develop services that expose Python objects and clients invoke methods remotely with automatic serialization and error propagation.
• Stream large datasets on-demand from a remote object using remote iterators instead of loading entire collections into memory upfront.

Worth the install?

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Install

pyro5 on PyPI

Before you install

Installation is straightforward with a single pure-Python wheel and minimal dependencies. The project is in low maintenance mode with only bug fixes expected, though it remains actively monitored and has a stable release history spanning over 20 years of Pyro development.

Requires Python 3.7 or later; both server and client must be reachable over the network or local sockets.

License in practice

MIT license permits commercial and private use with minimal restrictions; you may use, modify, and distribute Pyro5 freely as long as you include the license notice.

Quickstart

pip install pyro5

import Pyro5.api

@Pyro5.api.expose
class MyObject:
    def greet(self, name):
        return f"Hello {name}"

uri = Pyro5.api.locate_ns().register("my.object", Pyro5.api.Daemon().register(MyObject()))
remote_obj = Pyro5.api.Proxy(uri)
print(remote_obj.greet("World"))

Package facts

Evidence: pyro5-5.17-py3-none-any.whl

Tags

More Distributed Computing packages

See also Pyro4 · py4j · pyro-ppl · pyro-api · conjure-python-client · tlslite-ng · wakeonlan · connectrpc