feat(pip_requirements): add requirements.*.(txt|pip) file pattern

docs/usage/python.md

@@ -27,7 +27,7 @@ Legacy versions with the `===` prefix are ignored.
 
 For the `pip_requirements` manager, the default file matching regex for `requirements.txt` follows common file name conventions.
 
-It will match `requirements.txt` and `requirements.pip`, and any file in the format `requirements-*.txt` or `requirements-*.pip`, to allow for common filename patterns such as `requirements-dev.txt`.
+It will match `requirements.txt` and `requirements.pip`, and any file in the format `requirements-*.txt` `requirements.*.txt` `requirements-*.pip` or `requirements.*.pip`, to allow for common filename patterns such as `requirements-dev.txt`.
 
 But Renovate may not find all your files.
 

lib/modules/manager/pip_requirements/index.spec.ts

@@ -0,0 +1,13 @@
+import { defaultConfig } from '.';
+
+describe('modules/manager/pip_requirements/index', () => {
+  it('default config file pattern', () => {
+    const reg = new RegExp(defaultConfig.fileMatch[0]);
+
+    expect(reg.test('requirements.txt')).toBe(true);
+    expect(reg.test('requirements-dev.txt')).toBe(true);
+    expect(reg.test('requirements.dev.txt')).toBe(true);
+    expect(reg.test('requirements-dev.pip')).toBe(true);
+    expect(reg.test('requirements.dev.pip')).toBe(true);
+  });
+});

lib/modules/manager/pip_requirements/index.ts

@@ -6,7 +6,7 @@ export { updateArtifacts } from './artifacts';
 export { extractPackageFile } from './extract';
 
 export const defaultConfig = {
-  fileMatch: ['(^|/)[\\w-]*requirements(-\\w+)?\\.(txt|pip)$'],
+  fileMatch: ['(^|/)[\\w-]*requirements([-.]\\w+)?\\.(txt|pip)$'],
 };
 
 export const categories: Category[] = ['python'];

lib/modules/manager/pip_requirements/readme.md

@@ -1,2 +1,2 @@
 Supports `requirements.txt` and `requirements.pip` files.
-The default file pattern is fairly flexible, to try to catch similarly named ones too (eg `requirements-*.txt` and `requirements-*.pip`) but may be extended/changed.
+The default file pattern is fairly flexible, to try to catch similarly named ones too (eg `requirements-*.txt` `requirements.*.txt` `requirements-*.pip` and `requirements.*.pip`) but may be extended/changed.