Add flake8-import-order (#49)

docs/Coding-Conventions.md

@@ -712,17 +712,30 @@ import ministry
 URL = "http://python.org"
 ```
 
-### [O.1.3] ✔️ **DO** Group imports by standard library, third party, then first_party
+### [O.1.3] ✔️ **DO** Group imports by standard library, third party, then first_party 💻
 
 > 🐍 This rule stems from [PEP 8](https://www.python.org/dev/peps/pep-0008)
 
-Additionally, you should put a blank line between each group of imports.
+> 💻 This rule is enforced by error codes I201, I202
+
+Additionally, you should put a single blank line between each group of imports.
 
 ```python
-# Bad
+# Bad - will produce I201
+import os
+import ministry
 import my_app.utils
+```
+
+```python
+# Bad - will produce I202
 import os
+
+import cheese_shop
+
 import ministry
+
+import my_app.utils
 ```
 
 ```python
@@ -734,14 +747,26 @@ import ministry
 import my_app.utils
 ```
 
-### [O.1.4] ✔️ **DO** Use absolute imports
+### [O.1.4] ✔️ **DO** List imports in alphabetical order 💻
+
+> 💻 This rule is enforced by error code I100
+
+```python
+# Bad
+import pathlib
+import os
+from abc import ABC
+```
+
+### [O.1.5] ✔️ **DO** Use absolute imports
 
 > 🐍 This rule stems from [PEP 8](https://www.python.org/dev/peps/pep-0008)
 
 ℹ️ An exception can be made for `__init__.py` files republishing child module declarations
 
 ```python
 # Bad
+from . import sibling
 from .sibling import rivalry
 ```
 
@@ -750,7 +775,7 @@ from .sibling import rivalry
 from my_app.relationships.sibling import rivalry
 ```
 
-### [O.1.5] ❌ **DO NOT** Use wildcard imports 💻
+### [O.1.6] ❌ **DO NOT** Use wildcard imports 💻
 
 > 🐍 This rule stems from [PEP 8](https://www.python.org/dev/peps/pep-0008)
 
@@ -773,7 +798,7 @@ from ministry import silly_walk
 import ministry
 ```
 
-### [O.1.6] ❌ **DO NOT** Rely on a module's imported names
+### [O.1.7] ❌ **DO NOT** Rely on a module's imported names
 
 > 🐍 This rule stems from [PEP 8](https://www.python.org/dev/peps/pep-0008)
 
@@ -784,14 +809,11 @@ import ministry
 
 ```python
 # Bad
-# cheese_shop.py - Imports module `brie`
-import brie
-
-# customer.py - Relying on the fact that `cheese_shop` imported module `brie`
+# Assuming the module cheese_shop imported module `brie`, the following would be wrong:
 import cheese_shop.brie
 ```
 
-### [O.1.7] ❌ **DO NOT** Import definitions that are not used 💻
+### [O.1.8] ❌ **DO NOT** Import definitions that are not used 💻
 
 > 💻 This rule is enforced by error code F401
 
@@ -800,7 +822,7 @@ import cheese_shop.brie
 import os  # Assuming os is never used
 ```
 
-### [O.1.8] ❌ **DO NOT** Change an imported object's case 💻
+### [O.1.9] ❌ **DO NOT** Change an imported object's case 💻
 
 > 💻 This rule is enforced by error codes N811, N812, N813, N814, N817
 

ni_python_styleguide/_acknowledge_existing_errors/__init__.py

@@ -1,7 +1,7 @@
 from collections import defaultdict
 import logging
-import re
 import pathlib
+import re
 
 from ni_python_styleguide._acknowledge_existing_errors import _lint_errors_parser
 

ni_python_styleguide/_acknowledge_existing_errors/_lint_errors_parser.py

@@ -1,6 +1,6 @@
-import re
-import logging
 from collections import namedtuple
+import logging
+import re
 
 LintError = namedtuple("LintError", ["file", "line", "column", "code", "explanation"])
 

ni_python_styleguide/_cli.py

@@ -1,10 +1,11 @@
-import click
 import contextlib
-import flake8.main.application
+from io import StringIO
 import logging
 import pathlib
+
+import click
+import flake8.main.application
 import toml
-from io import StringIO
 
 from ni_python_styleguide import _acknowledge_existing_errors
 
@@ -25,6 +26,8 @@ def _read_pyproject_toml(ctx, param, value):
     except (toml.TomlDecodeError, OSError) as e:
         raise click.FileError(filename=value, hint=f"Error reading configuration file: {e}")
 
+    ctx.ensure_object(dict)
+    ctx.obj["PYPROJECT"] = pyproject_data
     config = pyproject_data.get("tool", {}).get("ni-python-styleguide", {})
 
     config.pop("quiet", None)
@@ -36,7 +39,23 @@ def _read_pyproject_toml(ctx, param, value):
     return value
 
 
-class AllowConfigGroup(click.Group):
+def _get_application_import_names(pyproject):
+    """Return the application package name the config."""
+    # Otherwise override with what was specified
+    app_name = (
+        pyproject.get("tool", {})
+        .get("ni-python-styleguide", {})
+        .get("application-import-names", "")
+    )
+
+    # Allow the poetry name as a fallback
+    if not app_name:
+        app_name = pyproject.get("tool", {}).get("poetry", {}).get("name", "").replace("-", "_")
+
+    return f"{app_name},tests"
+
+
+class ConfigGroup(click.Group):
     """click.Group subclass which allows for a config option to load options from."""
 
     def __init__(self, *args, **kwargs):
@@ -61,7 +80,7 @@ def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
 
-@click.group(cls=AllowConfigGroup)
+@click.group(cls=ConfigGroup)
 @click.option(
     "-v",
     "--verbose",
@@ -94,6 +113,7 @@ def main(ctx, verbose, quiet, config, exclude, extend_exclude):
     ctx.ensure_object(dict)
     ctx.obj["VERBOSITY"] = verbose - quiet
     ctx.obj["EXCLUDE"] = ",".join(filter(bool, [exclude.strip(","), extend_exclude.strip(",")]))
+    ctx.obj["APP_IMPORT_NAMES"] = _get_application_import_names(ctx.obj.get("PYPROJECT", {}))
 
 
 def _lint(obj, format, extend_ignore, file_or_dir):
@@ -108,6 +128,7 @@ def _lint(obj, format, extend_ignore, file_or_dir):
         # [tool.black] setting (which makes sense if you think about it)
         # So we need to give it one
         f"--black-config={(pathlib.Path(__file__).parent / 'config.toml').resolve()}",
+        f"--application-import-names={obj['APP_IMPORT_NAMES']}",
         *file_or_dir,
     ]
     app.run(list(filter(bool, args)))

ni_python_styleguide/config.ini

@@ -77,10 +77,15 @@ ignore =
     D213  # Multi-line docstring summary should start at the second line
     D400  # First line should end with a period
 
+    # flake8-import-order
+    I101  #  The names in your from import are in the wrong order. (Enforced by E401)
 
 # Flake8 includes mccabe by default.
 # We have yet to evaluate it, so ignore the errors for now
 extend-ignore=C90
 
 # flake8-docstrings
 docstring-convention=all
+
+# flake8-import-order
+import-order-style=google