Add Python formatting with Ruff

.git-blame-ignore-revs

@@ -3,3 +3,6 @@
 
 # Apply clang-format to the project.
 5e8537a77e760c160ace3dfe23ee8c76ee5aeeb3
+
+# Apply ruff format to the project
+d6d0607a845e6f71084ce272a1c1e8c50e244bdd

.github/workflows/lint.yml

@@ -13,6 +13,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           show-progress: false
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.12
       - name: Setup Linux
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -27,6 +30,9 @@ jobs:
       - name: Install project deps with pnpm
         run: |
           pnpm i
+      - name: Install Ruff
+        run: |
+          pip install ruff
       - name: Lint
         run: |
           python3 ./tools/cross/format.py --check

samples/pyodide-fastapi/worker.py

@@ -1,5 +1,6 @@
 from asgi import env
 
+
 async def on_fetch(request):
     import asgi
 

samples/pyodide-langchain/worker.py

@@ -4,10 +4,13 @@
 
 API_KEY = "sk-abcdefg"
 
+
 async def test(request):
-  prompt = PromptTemplate.from_template("Complete the following sentence: I am a {profession} and ")
-  llm = OpenAI(api_key=API_KEY)
-  chain = prompt | llm
+    prompt = PromptTemplate.from_template(
+        "Complete the following sentence: I am a {profession} and "
+    )
+    llm = OpenAI(api_key=API_KEY)
+    chain = prompt | llm
 
-  res = await chain.ainvoke({"profession": "electrician"})
-  print(res)
+    res = await chain.ainvoke({"profession": "electrician"})
+    print(res)

samples/repl-server-python/worker.py

@@ -1,4 +1,3 @@
-
 from js import Response
 
 import io
@@ -12,12 +11,13 @@
 
 ii = code.InteractiveInterpreter()
 
+
 async def on_fetch(request, env):
-  cmd = (await request.json()).cmd
+    cmd = (await request.json()).cmd
 
-  ii.runsource(cmd)
+    ii.runsource(cmd)
 
-  res = sys.stdout.getvalue()
-  sys.stdout = StringIO()
+    res = sys.stdout.getvalue()
+    sys.stdout = StringIO()
 
-  return Response.new(res)
+    return Response.new(res)

src/cloudflare/internal/test/ai/ai-api-test.py

@@ -2,9 +2,10 @@
 # Licensed under the Apache 2.0 license found in the LICENSE file or at:
 #     https://opensource.org/licenses/Apache-2.0
 
+
 async def test(context, env):
-  resp = await env.ai.run('testModel', {"prompt": 'test'})
-  assert resp.response == "model response"
+    resp = await env.ai.run("testModel", {"prompt": "test"})
+    assert resp.response == "model response"
 
-  # Test request id is present
-  assert env.ai.lastRequestId == '3a1983d7-1ddd-453a-ab75-c4358c91b582'
+    # Test request id is present
+    assert env.ai.lastRequestId == "3a1983d7-1ddd-453a-ab75-c4358c91b582"

src/cloudflare/internal/test/d1/d1-api-test.py

@@ -2,36 +2,38 @@
 # Licensed under the Apache 2.0 license found in the LICENSE file or at:
 #     https://opensource.org/licenses/Apache-2.0
 
+
 def assertSuccess(ret):
-  # D1 operations return an object with a `success` field.
-  assert ret.success
+    # D1 operations return an object with a `success` field.
+    assert ret.success
+
 
 async def test(context, env):
-  DB = env.d1
+    DB = env.d1
 
-  assertSuccess(
-    await DB.prepare(
-      """CREATE TABLE users
-      (
-          user_id    INTEGER PRIMARY KEY,
-          name       TEXT,
-          home       TEXT,
-          features   TEXT,
-          land_based BOOLEAN
-      );
-      """
-    ).run()
-  )
+    assertSuccess(
+        await DB.prepare(
+            """CREATE TABLE users
+            (
+                user_id    INTEGER PRIMARY KEY,
+                name       TEXT,
+                home       TEXT,
+                features   TEXT,
+                land_based BOOLEAN
+            );
+            """
+        ).run()
+    )
 
-  result = await DB.prepare(
-      """
+    result = await DB.prepare(
+        """
         INSERT INTO users (name, home, features, land_based) VALUES
           ('Albert Ross', 'sky', 'wingspan', false),
           ('Al Dente', 'bowl', 'mouthfeel', true)
         RETURNING *
-      """
+        """
     ).all()
 
-  assertSuccess(result)
-  assert len(result.results) == 2
-  assert result.results[0].name == "Albert Ross"
+    assertSuccess(result)
+    assert len(result.results) == 2
+    assert result.results[0].name == "Albert Ross"

src/cloudflare/internal/test/vectorize/vectorize-api-test.py

@@ -8,19 +8,29 @@
 from pyodide.ffi import to_js as _to_js
 from js import Object
 
+
 def to_js(obj):
-   return _to_js(obj, dict_converter=Object.fromEntries)
+    return _to_js(obj, dict_converter=Object.fromEntries)
+
 
 async def test(context, env):
-  IDX = env.vectorSearch
+    IDX = env.vectorSearch
 
-  res_array = [0] * 5
-  # TODO(EW-8209): This shouldn't require `to_js`. It subtly fails without it.
-  results = await IDX.query(Float32Array.new(res_array), to_js({
-    "topK": 3,
-    "returnValues": True,
-    "returnMetadata": True,
-  }))
-  assert results.count > 0
-  assert results.matches[0].id == "b0daca4a-ffd8-4865-926b-e24800af2a2d"
-  assert results.matches[1].metadata.text == "Peter Piper picked a peck of pickled peppers"
+    res_array = [0] * 5
+    # TODO(EW-8209): This shouldn't require `to_js`. It subtly fails without it.
+    results = await IDX.query(
+        Float32Array.new(res_array),
+        to_js(
+            {
+                "topK": 3,
+                "returnValues": True,
+                "returnMetadata": True,
+            }
+        ),
+    )
+    assert results.count > 0
+    assert results.matches[0].id == "b0daca4a-ffd8-4865-926b-e24800af2a2d"
+    assert (
+        results.matches[1].metadata.text
+        == "Peter Piper picked a peck of pickled peppers"
+    )

src/pyodide/internal/asgi.py

@@ -5,10 +5,12 @@
 
 ASGI = {"spec_version": "2.0", "version": "3.0"}
 
+
 @Depends
 async def env(request: Request):
     return request.scope["env"]
 
+
 @contextmanager
 def acquire_js_buffer(pybuffer):
     from pyodide.ffi import create_proxy
@@ -45,15 +47,17 @@ def request_to_scope(req, env, ws=False):
         "path": path,
         "query_string": query_string,
         "type": ty,
-        "env": env
+        "env": env,
     }
 
 
 async def start_application(app):
     shutdown_future = Future()
+
     async def shutdown():
         shutdown_future.set_result(None)
         await sleep(0)
+
     it = iter([{"type": "lifespan.startup"}, Future()])
 
     async def receive():
@@ -65,11 +69,11 @@ async def receive():
     ready = Future()
 
     async def send(got):
-        if got['type'] == 'lifespan.startup.complete':
+        if got["type"] == "lifespan.startup.complete":
             print("Application startup complete.")
             print("Uvicorn running")
             ready.set_result(None)
-        if got['type'] == 'lifespan.shutdown.complete':
+        if got["type"] == "lifespan.shutdown.complete":
             print("Application shutdown complete")
         raise RuntimeError(f"Unexpected lifespan event {got['type']}")
 

src/pyodide/internal/patches/aiohttp.py

@@ -11,8 +11,10 @@
 from typing import Any, Optional, Iterable
 from yarl import URL
 
+
 class Content:
     __slots__ = ("_jsresp", "_exception")
+
     def __init__(self, _jsresp):
         self._jsresp = _jsresp
         self._exception = None
@@ -30,34 +32,35 @@ def exception(self):
     def set_exception(self, exc: BaseException) -> None:
         self._exception = exc
 
+
 async def _request(
     self,
     method: str,
     str_or_url,
     *,
-    params = None,
+    params=None,
     data: Any = None,
     json: Any = None,
-    cookies = None,
-    headers = None,
+    cookies=None,
+    headers=None,
     skip_auto_headers: Optional[Iterable[str]] = None,
-    auth = None,
+    auth=None,
     allow_redirects: bool = True,
     max_redirects: int = 10,
     compress: Optional[str] = None,
     chunked: Optional[bool] = None,
     expect100: bool = False,
-    raise_for_status = None,
+    raise_for_status=None,
     read_until_eof: bool = True,
-    proxy = None,
-    proxy_auth = None,
-    timeout = None,
+    proxy=None,
+    proxy_auth=None,
+    timeout=None,
     verify_ssl: Optional[bool] = None,
     fingerprint: Optional[bytes] = None,
-    ssl_context = None,
-    ssl = None,
-    proxy_headers = None,
-    trace_request_ctx = None,
+    ssl_context=None,
+    ssl=None,
+    proxy_headers=None,
+    trace_request_ctx=None,
     read_bufsize: Optional[int] = None,
 ):
     # NOTE: timeout clamps existing connect and read timeouts.  We cannot
@@ -70,13 +73,10 @@ async def _request(
     ssl = _merge_ssl_params(ssl, verify_ssl, ssl_context, fingerprint)
 
     if data is not None and json is not None:
-        raise ValueError(
-            "data and json parameters can not be used at the same time"
-        )
+        raise ValueError("data and json parameters can not be used at the same time")
     elif json is not None:
         data = payload.JsonPayload(json, dumps=self._json_serialize)
 
-
     redirects = 0
     history = []
     version = self._version
@@ -125,8 +125,7 @@ async def _request(
             url, auth_from_url = strip_auth_from_url(url)
             if auth and auth_from_url:
                 raise ValueError(
-                    "Cannot combine AUTH argument with "
-                    "credentials encoded in URL"
+                    "Cannot combine AUTH argument with credentials encoded in URL"
                 )
 
             if auth is None:
@@ -194,13 +193,16 @@ async def _request(
             )
             from js import fetch, Headers
             from pyodide.ffi import to_js
+
             body = None
             if req.body:
                 body = to_js(req.body._value)
             jsheaders = Headers.new()
             for k, v in headers.items():
                 jsheaders.append(k, v)
-            jsresp = await fetch(str(req.url), method=req.method, headers=jsheaders, body=body)
+            jsresp = await fetch(
+                str(req.url), method=req.method, headers=jsheaders, body=body
+            )
             resp.version = version
             resp.status = jsresp.status
             resp.reason = jsresp.statusText
@@ -209,7 +211,6 @@ async def _request(
             resp._raw_headers = tuple(tuple(e) for e in jsresp.headers)
             resp.content = Content(jsresp)
 
-
         # check response status
         if raise_for_status is None:
             raise_for_status = self._raise_for_status
@@ -249,4 +250,5 @@ async def _request(
             )
         raise
 
+
 ClientSession._request = _request

src/pyodide/internal/process_script_imports.py

@@ -2,7 +2,9 @@
 # All it does is walk through the imports in each of the worker's modules and attempts to import
 # them. Local imports are not possible because the worker file path is explicitly removed from the
 # module search path.
-CF_LOADED_MODULES=[]
+CF_LOADED_MODULES = []
+
+
 def _do_it():
     import ast
     from pathlib import Path

src/pyodide/internal/topLevelEntropy/entropy_import_context.py

@@ -20,7 +20,13 @@
 import sys
 
 RUST_PACKAGES = ["pydantic_core", "tiktoken"]
-MODULES_TO_PATCH = ["random", "numpy.random", "numpy.random.mtrand", "tempfile", "aiohttp.http_websocket"] + RUST_PACKAGES
+MODULES_TO_PATCH = [
+    "random",
+    "numpy.random",
+    "numpy.random.mtrand",
+    "tempfile",
+    "aiohttp.http_websocket",
+] + RUST_PACKAGES
 
 # Control number of allowed entropy calls.
 
@@ -136,6 +142,7 @@ def pydantic_core_context(module):
 @contextmanager
 def aiohttp_http_websocket_context(module):
     import random
+
     Random = random.Random
 
     def patched_Random():