Add Microsoft Python standards compliance

- Add py.typed markers for both packages (enables type checking)
- Enhance pyproject.toml with complete metadata and dev dependencies
- Add missing docstrings for HttpClient, error_codes functions
- Add module docstrings for better discoverability
- Configure linting tools (black, isort, mypy, ruff) per Microsoft standards

Author: suyask-msft

pyproject.toml

@@ -8,15 +8,22 @@ version = "0.1.0b1"
 description = "Python SDK for Microsoft Dataverse"
 readme = {file = "README.md", content-type = "text/markdown"}
 authors = [{name = "Microsoft Corporation"}]
-license = "MIT"
+license = {text = "MIT"}
 license-files = ["LICENSE"]
 requires-python = ">=3.10"
+keywords = ["dataverse", "powerapps", "powerplatform", "crm", "dynamics", "odata"]
 classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Operating System :: OS Independent",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Typing :: Typed",
 ]
 dependencies = [
     "azure-identity>=1.17.0",
@@ -27,6 +34,23 @@ dependencies = [
 
 [project.urls]
 "Homepage" = "https://github.com/microsoft/PowerPlatform-DataverseClient-Python"
+"Repository" = "https://github.com/microsoft/PowerPlatform-DataverseClient-Python.git"
+"Issues" = "https://github.com/microsoft/PowerPlatform-DataverseClient-Python/issues"
+"Documentation" = "https://github.com/microsoft/PowerPlatform-DataverseClient-Python#readme"
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+zip-safe = false
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-cov>=4.0.0",
+    "black>=23.0.0",
+    "isort>=5.12.0",
+    "mypy>=1.0.0",
+    "ruff>=0.1.0",
+]
 
 [tool.setuptools]
 package-dir = {"" = "src"}
@@ -36,3 +60,33 @@ zip-safe = false
 where = ["src"]
 include = ["PowerPlatform*"]
 namespaces = false
+
+[tool.setuptools.package-data]
+"*" = ["py.typed"]
+
+# Microsoft Python Standards - Linting & Formatting
+[tool.black]
+line-length = 120
+target-version = ['py310']
+
+[tool.isort]
+profile = "black"
+line_length = 120
+
+[tool.mypy]
+python_version = "3.10"
+strict = true
+warn_return_any = true
+warn_unused_configs = true
+
+[tool.ruff]
+line-length = 120
+target-version = "py310"
+select = [
+    "E", "W",  # pycodestyle
+    "F",       # pyflakes  
+    "I",       # isort
+    "N",       # pep8-naming
+    "UP",      # pyupgrade
+    "B",       # flake8-bugbear
+]

src/PowerPlatform/Dataverse/core/error_codes.py

@@ -1,6 +1,14 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT license.
 
+"""
+Error code constants and utilities for Dataverse SDK exceptions.
+
+This module defines error subcodes used throughout the SDK for categorizing
+different types of failures, including HTTP errors, validation errors,
+SQL parsing errors, and metadata operation errors.
+"""
+
 # HTTP subcode constants
 HTTP_400 = "http_400"
 HTTP_401 = "http_401"
@@ -69,7 +77,26 @@
 TRANSIENT_STATUS = {429, 502, 503, 504}
 
 def http_subcode(status: int) -> str:
+    """
+    Convert HTTP status code to error subcode string.
+    
+    :param status: HTTP status code (e.g., 400, 404, 500).
+    :type status: int
+    :return: Error subcode string (e.g., "http_400", "http_404").
+    :rtype: str
+    """
     return HTTP_STATUS_TO_SUBCODE.get(status, f"http_{status}")
 
 def is_transient_status(status: int) -> bool:
+    """
+    Check if an HTTP status code indicates a transient error that may succeed on retry.
+    
+    Transient status codes include: 429 (Too Many Requests), 502 (Bad Gateway),
+    503 (Service Unavailable), and 504 (Gateway Timeout).
+    
+    :param status: HTTP status code to check.
+    :type status: int
+    :return: True if the status code is considered transient.
+    :rtype: bool
+    """
     return status in TRANSIENT_STATUS

src/PowerPlatform/Dataverse/core/http.py

@@ -1,6 +1,14 @@
 # Copyright (c) Microsoft Corporation.
 # Licensed under the MIT license.
 
+"""
+HTTP client with automatic retry logic and timeout handling.
+
+This module provides :class:`HttpClient`, a wrapper around the requests library
+that adds configurable retry behavior for transient network errors and
+intelligent timeout management based on HTTP method types.
+"""
+
 from __future__ import annotations
 
 import time
@@ -10,6 +18,20 @@
 
 
 class HttpClient:
+    """
+    HTTP client with configurable retry logic and timeout handling.
+    
+    Provides automatic retry behavior for transient failures and default timeout
+    management for different HTTP methods.
+    
+    :param retries: Maximum number of retry attempts for transient errors. Default is 5.
+    :type retries: int or None
+    :param backoff: Base delay in seconds between retry attempts. Default is 0.5.
+    :type backoff: float or None  
+    :param timeout: Default request timeout in seconds. If None, uses per-method defaults.
+    :type timeout: float or None
+    """
+    
     def __init__(
         self,
         *,
@@ -22,6 +44,21 @@ def __init__(
         self.default_timeout: Optional[float] = timeout
 
     def request(self, method: str, url: str, **kwargs: Any) -> requests.Response:
+        """
+        Execute an HTTP request with automatic retry logic and timeout management.
+        
+        Applies default timeouts based on HTTP method (120s for POST/DELETE, 10s for others)
+        and retries on network errors with exponential backoff.
+        
+        :param method: HTTP method (GET, POST, PUT, DELETE, etc.).
+        :type method: str
+        :param url: Target URL for the request.
+        :type url: str
+        :param kwargs: Additional arguments passed to ``requests.request()``, including headers, data, etc.
+        :return: HTTP response object.
+        :rtype: requests.Response
+        :raises requests.exceptions.RequestException: If all retry attempts fail.
+        """
         # Apply per-method default timeouts if not provided
         # Apply default timeout if not provided; fall back to per-method defaults
         if "timeout" not in kwargs: