init

Author: MarcoGorelli

Diff for: .gitignore

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+*.egg-info
+*.pyc
+/.coverage
+/.mypy_cache
+/.pytest_cache
+/.tox
+/venv*

Diff for: LICENSE

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+Copyright (c) 2021 Anthony Sottile
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Diff for: README.md

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+[![Build Status](https://dev.azure.com/asottile/asottile/_apis/build/status/asottile.flake8-match?branchName=master)](https://dev.azure.com/asottile/asottile/_build/latest?definitionId=69&branchName=master)
+[![Azure DevOps coverage](https://img.shields.io/azure-devops/coverage/asottile/asottile/69/master.svg)](https://dev.azure.com/asottile/asottile/_build/latest?definitionId=69&branchName=master)
+[![pre-commit.ci status](https://results.pre-commit.ci/badge/github/asottile/flake8-match/master.svg)](https://results.pre-commit.ci/latest/github/asottile/flake8-match/master)
+
+flake8-match
+============
+
+flake8 plugin which forbids match statements (PEP 634)
+
+## installation
+
+`pip install flake8-match`
+
+## flake8 codes
+
+| Code   | Description                 |
+|--------|-----------------------------|
+| MAT001 | do not use match statements |
+
+## rationale
+
+lol
+
+## as a pre-commit hook
+
+See [pre-commit](https://github.com/pre-commit/pre-commit) for instructions
+
+Sample `.pre-commit-config.yaml`:
+
+```yaml
+-   repo: https://gitlab.com/pycqa/flake8
+    rev: 3.8.4
+    hooks:
+    -   id: flake8
+        additional_dependencies: [flake8-match==1.0.0]
+```

Diff for: azure-pipelines.yml

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+trigger:
+  branches:
+    include: [master, test-me-*]
+  tags:
+    include: ['*']
+
+resources:
+  repositories:
+    - repository: asottile
+      type: github
+      endpoint: github
+      name: asottile/azure-pipeline-templates
+      ref: refs/tags/v2.1.0
+
+jobs:
+- template: job--python-tox.yml@asottile
+  parameters:
+    toxenvs: [py310]
+    os: linux

Diff for: pandas_style_guide/__main__.py

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+from __future__ import annotations
+from pandas_style_guide.check_for_exec import check_for_exec
+
+
+import ast
+import importlib.metadata
+from typing import Any, List, Dict, Tuple, Type, Callable
+import collections
+from typing import Generator
+
+from pandas_style_guide._data import FUNCS, visit
+
+
+
+
+class Plugin:
+    name = __name__
+    version = 1#importlib.metadata.version(__name__)
+
+    def __init__(self, tree: ast.AST):
+        self._tree = tree
+
+    def run(self) -> Generator[tuple[int, int, str, type[Any]], None, None]:
+        callbacks = visit(FUNCS, self._tree)
+        if not callbacks:
+            return
+        for line, col, msg in callbacks:
+            yield line, col, msg, type(self)
+                                                                  

Diff for: pandas_style_guide/_data.py

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+import collections
+from typing import List, Tuple, Dict
+import ast
+
+FUNCS = collections.defaultdict(list)
+def register(tp):
+    def register_decorator(func):
+        FUNCS[tp].append(func)
+        return func
+    return register_decorator
+
+
+def visit(funcs, tree: ast.Module) -> Dict[int, List[int]]:
+    "Step through tree, recording when nodes are in annotations."
+    in_annotation = False
+    nodes: List[Tuple[bool, ast.AST]] = [(in_annotation, tree)]
+
+    while nodes:
+        in_annotation, node = nodes.pop()
+
+        tp = type(node)
+        for ast_func in funcs[tp]:
+            yield from ast_func(in_annotation, node)
+
+        for name in reversed(node._fields):
+            value = getattr(node, name)
+            if name in {"annotation", "returns"}:
+                next_in_annotation = True
+            else:
+                next_in_annotation = in_annotation
+            if isinstance(value, ast.AST):
+                nodes.append((next_in_annotation, value))
+            elif isinstance(value, list):
+                for value in reversed(value):
+                    if isinstance(value, ast.AST):
+                        nodes.append((next_in_annotation, value))
+

Diff for: pandas_style_guide/check_for_exec.py

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+import ast
+from pandas_style_guide._data import register
+
+MSG = 'PSG001 do not use exec'
+@register(ast.Call)
+def check_for_exec(self, node):
+    if node.func.id == 'exec':
+        yield (node.lineno, node.col_offset, MSG)

Diff for: requirements-dev.txt

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+covdefaults
+coverage
+pytest

Diff for: setup.cfg

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+[metadata]
+name = pandas-style-guide
+version = 2.11.0
+description = A tool to automatically upgrade syntax for newer versions.
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://github.com/asottile/pyupgrade
+author = Anthony Sottile
+author_email = [email protected]
+license = MIT
+license_file = LICENSE
+classifiers =
+    License :: OSI Approved :: MIT License
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+
+[options]
+py_modules = pandas_style_guide
+install_requires =
+    flake8>=3.8
+packages = find:
+python_requires = >=3.6.1
+
+[options.packages.find]
+exclude =
+    tests*
+    testing*
+
+[options.entry_points]
+flake8.extension =
+    PSG=pandas_style_guide.__main__:Plugin
+
+[bdist_wheel]
+universal = True
+
+[coverage:run]
+plugins = covdefaults
+
+[mypy]
+check_untyped_defs = true
+disallow_any_generics = true
+disallow_incomplete_defs = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+
+[mypy-testing.*]
+disallow_untyped_defs = false
+
+[mypy-tests.*]
+disallow_untyped_defs = false

Diff for: setup.py

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+from setuptools import setup
+setup()

Diff for: t.py

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+a = exec('3')
+
+
+exec('43')

Diff for: tests/__init__.py

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+import ast
+
+from flake8_match import Plugin
+
+
+def results(s):
+    return {'{}:{}: {}'.format(*r) for r in Plugin(ast.parse(s)).run()}
+
+
+def test_trivial():
+    assert not results('')
+
+
+def test_assignment_expression_not_ok():
+    src = '''\
+match 1:
+    case 1:
+        print(1)
+'''
+    msg, = results(src)
+    assert msg == '1:0: MAT001 do not use match statements'

Diff for: tests/flake8_match_test.py

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+[tox]
+envlist = py310,pre-commit
+
+[testenv]
+deps = -rrequirements-dev.txt
+commands =
+    coverage erase
+    coverage run -m pytest {posargs:tests}
+    coverage report --fail-under 100
+
+[testenv:pre-commit]
+skip_install = true
+deps = pre-commit
+commands = pre-commit run --all-files --show-diff-on-failure
+
+[pep8]
+ignore = E265,E501,W504