ry stands for "repeat yourself" - the opposite of DRY.

Inspired by unasync, but built from the ground up for inline transformations and more flexible configurations.

Ry transforms the Python code using regex rules. Originally built to simplify maintaining dual async/sync codebases, but works for any pattern-based transformations.

Comes with a package system where you can define reusable sets of rules. Have a built-in std package with all standard rules (like async def to def, etc), and you can create your own packages for your specific transformations.

Installation

pip install ry-cli

Inline Transformations

Ry can transform not only whole files, but also specific lines or blocks of code based on inline comments.

class Response:
  
    async def aclose(self) -> None:  # unasync: generate
        if self._stream_to_close is None:
            return

        if not isinstance(self._stream_to_close, AsyncClosableStream):
            raise AsyncSyncMismatchError("Can't call `aclose` in this context")

        await self._stream_to_close.aclose()
        self._stream_to_close = None

+    def close(self) -> None:  # unasync: generated
+        if self._stream_to_close is None:
+            return
+
+        if not isinstance(self._stream_to_close, AsyncClosableStream):
+            raise AsyncSyncMismatchError("Can't call `close` in this context")
+
+        self._stream_to_close.close()
+        self._stream_to_close = None

Usage

Validate without modifying files:

ry src/

Fixes all the fixable issues:

ry --fix src/