python: pycodestyle (ex pep8) vs pylint 严格性

Question

我有一个想要检查PEP8一致性的python项目。

我的setyp.cfg如下：

[pycodestyle]
count = True
ignore = E266, W504
max-line-length = 80
statistics = True
exclude = .venv,./build%

经过一些清理，我的pycodestyle检查现在没有错误或警告（当然忽略了那些）

~/Workspace/my-app  master ✔                                                                                                                        2h36m
➢  pycodestyle .
(.venv)
~/Workspace/my-app  master ✔

但是，对我的项目运行pylint产生大量错误：

（其中一些仅用于演示目的）

************* Module somemodule.commands
src/somemodule/commands.py:98:0: C0330: Wrong continued indentation (add 16 spaces).
                            format(gcp_project)))
                            ^               | (bad-continuation)
src/somemodule/commands.py:1:0: C0111: Missing module docstring (missing-docstring)
src/somemodule/commands.py:21:-1: W0105: String statement has no effect (pointless-string-statement)
src/somemodule/commands.py:29:4: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
src/somemodule/commands.py:45:4: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
src/somemodule/commands.py:41:16: W0613: Unused argument 'g_project' (unused-argument)
src/somemodule/commands.py:58:0: C0111: Missing function docstring (missing-docstring)
src/somemodule/commands.py:59:4: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
src/somemodule/commands.py:100:4: R1705: Unnecessary "else" after "return" (no-else-return)
src/somemodule/commands.py:102:8: C0103: Variable name "p2" doesn't conform to snake_case naming style (invalid-name)
src/somemodule/commands.py:123:4: C0103: Variable name "p" doesn't conform to snake_case naming style (invalid-name)
src/somemodule/commands.py:139:0: C0111: Missing function docstring (missing-docstring)
src/somemodule/commands.py:2:0: C0411: standard import "import os" should be placed before "import click" (wrong-import-order)
src/somemodule/commands.py:3:0: C0411: standard import "import sys" should be placed before "import click" (wrong-import-order)
src/somemodule/commands.py:5:0: C0411: standard import "from subprocess import Popen, PIPE" should be placed before "import click" (wrong-import-order)

这两个工具怎么会产生如此不同的结果？

Answer 1

我只是偶然发现了这个问题，我自己比较了pycodestyle和pylint 。

总之答案是， pycodestyle是“子集” pylint 。 让我从基本的 Python 工具中引用一些内容：

• Pycodestyle（原 PEP8）是官方的 linter 工具，用于根据 PEP8 python 的样式约定检查 python 代码。
• Pylint 是一个 python linter，它检查源代码并充当错误和质量检查器。 它具有比 PEP8（Python 风格指南）更多的验证检查和选项。
  • 这是 Python 中最常用的 linting 工具。
  • 它包括以下功能：
    • 检查每行的长度
    • 根据项目的编码标准检查变量名称是否格式正确
    • 检查声明的接口是否真正实现。
    • ...