Ypy is a Python binding for Y-CRDT. It provides distributed data types that enable real-time collaboration between devices. Y-Py can sync data with any other platform that has a Y-CRDT binding, allowing for seamless cross-domain communication. The library is a thin wrapper around Yrs, taking advantage of the safety and performance of Rust.

pip install y-py

Ypy provides many of the same shared data types as Yjs. All objects are shared within a YDoc and get modified within a transaction block.

import y_py as Y

d1 = Y.YDoc()
# Create a new YText object in the YDoc
text = d1.get_text('test')
# Start a transaction in order to update the text
with d1.begin_transaction() as txn:
    # Add text contents
    text.push(txn, "hello world!")

# Create another document
d2 = Y.YDoc()
# Share state with the original document
state_vector = Y.encode_state_vector(d2)
diff = Y.encode_state_as_update(d1, state_vector)
Y.apply_update(d2, diff)

with d2.begin_transaction() as txn:
    value = d2.get_text('test').to_string(txn)

assert value == "hello world!"

0. Install Rust Nightly and Python
1. Install maturin in order to build Ypy

pip install maturin

2. Create a development build of the library maturin develop

All tests are located in /tests. You can run them with pytest.

pytest

Build the library as a wheel and store them in target/wheels :

maturin build