Python: added code coverage and vscode tasks def for python (microsof…

…t#4193)

### Motivation and Context

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To improve the code and PR quality I want to add code coverage to the
dev dependencies, and setup. I then also added tasks into the python
folder for both the pre-commit config and running unit tests with code
coverage. Fixes microsoft#3980

Initially I excluded code coverage for all connectors, that needs to be
refined and this can also be added to the GH actions once we have it
setup well.

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

python/.coveragerc

@@ -0,0 +1,21 @@
+[run]
+source = semantic_kernel
+omit = 
+    semantic_kernel/connectors/*
+
+[report]
+# Regexes for lines to exclude from consideration
+exclude_lines =
+    # Have to re-enable the standard pragma
+    pragma: no cover
+
+    # Don't complain about missing debug-only code:
+    def __repr__
+
+    # Don't complain if tests don't hit defensive assertion code:
+    raise AssertionError
+    raise NotImplementedError
+
+    # TYPE_CHECKING and @overload blocks are never executed during pytest run
+    if TYPE_CHECKING:
+    @overload

python/.vscode/extensions.json

@@ -2,6 +2,8 @@
   // See https://go.microsoft.com/fwlink/?LinkId=827846
   // for the documentation about the extensions.json format
   "recommendations": [
-    "littlefoxteam.vscode-python-test-adapter"
+    "littlefoxteam.vscode-python-test-adapter",
+    "streetsidesoftware.code-spell-checker",
+    "ms-python.python",
   ]
 }

python/.vscode/settings.json

@@ -1,23 +1,37 @@
 {
     "python.analysis.extraPaths": [
-        "./src"
+        "./semantic_kernel"
     ],
     "explorer.compactFolders": false,
     "prettier.enable": true,
     "editor.formatOnType": true,
     "editor.formatOnSave": true,
     "editor.formatOnPaste": true,
-    "python.formatting.provider": "black",
-    "python.formatting.autopep8Args": [
-        "--max-line-length=160"
-    ],
+    "editor.defaultFormatter": "charliermarsh.ruff",
     "notebook.output.textLineLimit": 500,
+    "cSpell.languageSettings": [
+        {
+            "languageId": "py",
+            "allowCompoundWords": true,
+            "locale": "en-US"
+        }
+    ],
     "cSpell.words": [
         "aeiou",
         "nopep",
         "OPENAI",
         "skfunction"
     ],
+    "cSpell.patterns": [
+        {
+            "name": "import",
+            "pattern": "import [a-zA-Z0-9_]+"
+        },
+        {
+            "name": "from import",
+            "pattern": "from [a-zA-Z0-9_]+ import [a-zA-Z0-9_]+"
+        }
+    ],
     "python.testing.pytestArgs": [
         "tests"
     ],
@@ -29,4 +43,17 @@
         "run",
         "pytest"
     ],
+    "[python]": {
+        "editor.codeActionsOnSave": {
+            "source.organizeImports": "explicit",
+            "source.fixAll": "explicit"
+        },
+        "editor.formatOnSave": true,
+        "editor.defaultFormatter": "charliermarsh.ruff",
+    },
+    "notebook.formatOnSave.enabled": true,
+    "notebook.codeActionsOnSave": {
+        "source.fixAll": true,
+        "source.organizeImports": true
+    }
 }

python/.vscode/tasks.json

@@ -0,0 +1,94 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Python: Run Checks",
+            "type": "shell",
+            "command": "poetry",
+            "args": [
+                "run",
+                "pre-commit",
+                "run",
+                "-c",
+                ".conf/.pre-commit-config.yaml",
+                "-a"
+            ],
+            "problemMatcher": {
+                "owner": "python",
+                "fileLocation": [
+                    "relative",
+                    "${workspaceFolder}"
+                ],
+                "pattern": {
+                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "message": 4
+                }
+            },
+            "presentation": {
+                "reveal": "silent",
+                "panel": "shared"
+            }
+        },
+        {
+            "label": "Python: Install",
+            "type": "shell",
+            "command": "poetry",
+            "args": [
+                "install"
+            ],
+            "presentation": {
+                "reveal": "silent",
+                "panel": "shared"
+            },
+            "problemMatcher": []
+        },
+        {
+            "label": "Python: Tests - Unit",
+            "type": "shell",
+            "command": "poetry",
+            "args": [
+                "run",
+                "pytest",
+                "tests/unit/"
+            ],
+            "group": "test",
+            "presentation": {
+                "reveal": "always",
+                "panel": "shared"
+            },
+            "problemMatcher": []
+        },
+        {
+            "label": "Python: Tests - Code Coverage",
+            "type": "shell",
+            "command": "poetry run pytest --cov=semantic_kernel --cov-report term-missing tests/unit/",
+            "group": "test",
+            "presentation": {
+                "reveal": "always",
+                "panel": "shared"
+            },
+            "problemMatcher": []
+        },
+        {
+            "label": "Python: Tests - All",
+            "type": "shell",
+            "command": "poetry",
+            "args": [
+                "run",
+                "pytest",
+                "tests/"
+            ],
+            "group": "test",
+            "presentation": {
+                "reveal": "always",
+                "panel": "shared"
+            },
+            "problemMatcher": []
+        }
+    ]
+}